+2008-11-10 Akim Demaille <demaille@gostai.com>
+
+ Avoid trailing spaces.
+ * data/c.m4: b4_comment(TEXT): Don't indent empty lines.
+ * data/lalr1.cc: Don't indent before rule and symbol actions, as
+ they can be empty, and anyway this incorrectly indents the first
+ action.
+
+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.
+ * etc/bench.pl.in ($dir): New.
+ Use it.
+ Check the use of constructors with an argument.
+ (bench_variant_parser): Fix.
+
+2008-11-09 Akim Demaille <demaille@gostai.com>
+
+ fix eof condition
+
+2008-11-09 Akim Demaille <demaille@gostai.com>
+
+ Fix --help.
+
+2008-11-09 Akim Demaille <demaille@gostai.com>
+
+ Require the generation of parse-gram.output.
+ * src/Makefile.am (YACC): Pass --report=all.
+
+2008-11-09 Akim Demaille <demaille@gostai.com>
+
+ Formatting changes.
+
+2008-11-09 Akim Demaille <demaille@gostai.com>
+
+ Update TODO.
+ * TODO: Remove obsolete items.
+ Update others.
+
+2008-11-09 Akim Demaille <demaille@gostai.com>
+
+ Enhance bench.pl.
+ * etc/bench.pl.in (parse, parse_expr, parse_term, parse_fact)
+ (@token, $grammar, $bench): New.
+ (generate_grammar_variant): Rename as...
+ (generate_grammar_list): this.
+ (generate_grammar): Adjust.
+ (bench_grammar): Rename as...
+ (bench): this.
+ Use it in the various bench-marking routines.
+ (-b, -g): New options.
+
+2008-11-09 Akim Demaille <demaille@gostai.com>
+
+ Use a static hierarchy for symbols in the C++ parser.
+ * data/lalr1.cc (symbol_base_type, symbol_type)
+ (stack_symbol_type): Make it a static hierarchy.
+ Adjust dependencies.
+
+2008-11-09 Akim Demaille <demaille@gostai.com>
+
+ bench.pl -d, --directive.
+ * etc/bench.pl.in (@directive): New.
+ (&bench_grammar): Use it.
+ (&bench_list_grammar): New, to provide access to the "variant"
+ grammar.
+ Use it.
+ (getopts): Support -d, --directive.
+
+2008-11-09 Akim Demaille <demaille@gostai.com>
+
+ Use inline for small operations.
+ * data/lalr1.cc (symbol_base_type, symbol_type)
+ (stack_symbol_type): Declare constructor and other operations as
+ inline.
+ (yy_destroy_): Inline.
+
+2008-11-09 Akim Demaille <demaille@gostai.com>
+
+ Introduce a hierarchy for symbols.
+ * data/lalr1.cc (symbol_base_type, symbol_type): New.
+ (data_type): Rename as...
+ (stack_symbol_type): this.
+ Derive from symbol_base_type.
+ (yy_symbol_value_print_): Merge into...
+ (yy_symbol_print_): this.
+ Rename as...
+ (yy_print_): this.
+ (yydestruct_): Rename as...
+ (yy_destroy_): this.
+ (b4_symbols_actions, YY_SYMBOL_PRINT): Adjust.
+ (parser::parse): yyla is now of symbol_type.
+ Use its type member instead of yytoken.
+
+2008-11-09 Akim Demaille <demaille@gostai.com>
+
+ Rename data_type and stack_symbol_type.
+ * data/lalr1.cc (data_type): Rename as...
+ (stack_symbol_type): this.
+
+2008-11-09 Akim Demaille <demaille@gostai.com>
+
+ Handle semantic value and location together.
+ * data/lalr1.cc (b4_symbol_actions): Bounce $$ and @$ to
+ yydata.value and yydata.location.
+ (yy_symbol_value_print_, yy_symbol_print_, yydestruct_)
+ (YY_SYMBOL_PRINT): Now take semantic value and location as a
+ single arg.
+ Adjust all callers.
+ (yydestruct_): New overload for a stack symbol.
+
+2008-11-09 Akim Demaille <demaille@gostai.com>
+
+ Push a complete symbol, not connected parts.
+ * data/lalr1.cc (yypush_): Take a data_type&, not disconnected
+ state, value and location.
+ Adjust callers.
+
+2008-11-09 Akim Demaille <demaille@gostai.com>
+
+ Agregate yylval and yylloc.
+ * data/lalr1.cc (parser::yylval, parser::yylloc): Replace by...
+ (parser::yyla): this.
+
+2008-11-09 Akim Demaille <demaille@gostai.com>
+
+ Rely on the state stack to display reduction traces.
+ To display rhs symbols before a reduction, we used information about the rule
+ reduced, which required the tables yyrhs and yyprhs. Now use rely only on the
+ state stack to get the same information.
+
+ * data/lalr1.cc (b4_rhs_data, b4_rhs_state): New.
+ Use them.
+ (parser::yyrhs_, parser::yyprhs_): Remove.
+ (parser::yy_reduce_print_): Use the state stack.
+
+2008-11-09 Akim Demaille <demaille@gostai.com>
+
+ Fuse yyval and yyloc into yylhs.
+ * data/lalr1.cc (b4_lhs_value, b4_lhs_location): Adjust to using
+ yylhs.
+ (parse): Replace yyval and yyloc with yylhs.value and
+ yylhs.location.
+ After a user action, compute yylhs.state earlier.
+ (yyerrlab1): Do not play tricks with yylhs.location, rather, use a
+ fresh error_token.
+
+2008-11-09 Di-an Jan <dianj@freeshell.org>
+
+ Remove unused variable.
+ * src/output.c (type_names_output): Remove unused variable sep.
+
+2008-11-09 Paolo Bonzini <bonzini@gnu.org>
+
+ Change tests/output.at quoting.
+ * tests/output.at (AT_CHECK_OUTPUT): Use conventional m4 quoting when
+ expanding arguments.
+
+2008-11-07 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Don't add a semicolon to actions for %skeleton or %language.
+ It breaks Java test cases as reported by Akim Demaille.
+ * src/scan-code.l: Implement.
+
+2008-11-07 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Clean up %skeleton and %language priority implementation.
+ * src/getargs.c (skeleton_prio): Use default_prio rather than 2, and
+ remove static qualifier because others will soon need to see it.
+ (language_prio): Likewise.
+ (getargs): Use command_line_prio rather than 0.
+ * src/getargs.h (command_line_prio, grammar_prio, default_prio): New
+ enum fields.
+ (skeleton_prio): Extern it.
+ (language_prio): Extern it.
+ * src/parse-gram.y: Use grammar_prio rather than 1.
+
+2008-11-07 Akim Demaille <demaille@gostai.com>
+
+ Moving push traces into yypush_.
+ * data/lalr1.cc (yypush_): Now takes a optional trace message.
+ Adjust all uses.
+
+2008-11-07 Akim Demaille <demaille@gostai.com>
+
+ The single-stack C++ parser is now the standard one.
+ * data/lalr1.cc: Rename as...
+ * data/lalr1-split.cc: this.
+ * data/lalr1-fusion.cc: Rename as...
+ * data/lalr1.cc: this.
+ * etc/bench.pl.in: Adjust.
+
+2008-11-07 Akim Demaille <demaille@gostai.com>
+
+ Avoid empty-if warnings.
+ Reported by Quentin Hocquet.
+
+ * data/lalr1-fusion.cc (YY_SYMBOL_PRINT, YY_REDUCE_PRINT)
+ (YY_STACK_PRINT): Provide some contents even when !YYDEBUG.
+
+2008-11-07 Akim Demaille <demaille@gostai.com>
+
+ Pass command line location to skeleton_arg and language_argmatch.
+ * src/getargs.h, src/getargs.c (skeleton_arg, language_argmatch):
+ The location argument is now mandatory.
+ Adjust all dependencies.
+ (getargs): Use command_line_location.
+
+2008-11-07 Akim Demaille <demaille@gostai.com>
+
+ -D, --define.
+ * src/getargs.c (usage): Document -D.
+ Fix help string for --locations.
+ (command_line_location): New.
+ (short_options, long_options, getargs): Support -D, --define.
+ (getargs): Move -d support at the right place.
+ * doc/bison.texinfo (Bison Options): Update.
+ * tests/input.at (%define, --define): New.
+
+2008-11-07 Akim Demaille <demaille@gostai.com>
+
+ Initialize the muscle table before parsing the command line.
+ * src/getargs.c (quotearg.h, muscle_tab.h): Include.
+ (getargs): Define file_name.
+ * src/main.c (main): Initialize muscle_tab before calling
+ getargs.
+ * src/muscle_tab.c (muscle_init): No longer define file_name, as
+ its value is not available yet.
+
+2008-11-07 Akim Demaille <demaille@gostai.com>
+
+ Locations without columns for command line arguments.
+ * src/location.c (location_print): Don't display negative columns.
+ * src/location.h: Document this.
+
+2008-11-07 Akim Demaille <demaille@gostai.com>
+
+ Fix --help.
+ * src/getargs.c (usage): Fix help string for -W.
+
+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.
+ * 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 <demaille@gostai.com>
+
+ Improve the display of sizes.
+ * etc/bench.p.in: Higher precision.
+ Sort by decreasing size.
+
+2008-11-04 Akim Demaille <demaille@gostai.com>
+
+ 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 <demaille@gostai.com>
+
+ 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 <demaille@gostai.com>
+
+ 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 <demaille@gostai.com>
+
+ bench.pl --bench.
+ * etc/bench.pl.in (--bench, $bench): New.
+
+2008-11-04 Akim Demaille <demaille@gostai.com>
+
+ Sort methods.
+ * data/lalr1-fusion.cc (destroy): Use as() in its definition.
+ Define it after as().
+
+2008-11-04 Akim Demaille <demaille@gostai.com>
+
+ Useless parens.
+ * data/lalr1-fusion.cc (b4_rhs_location): Remove useless parens.
+
+2008-11-04 Akim Demaille <demaille@gostai.com>
+
+ Issue missing synclines after user actions.
+ * data/c.m4 (b4_case): Issue synclines on the output file.
+
+2008-11-04 Akim Demaille <demaille@gostai.com>
+
+ Remove trailing empty line.
+ * data/lalr1-fusion.cc: Don't add an empty line after the user's
+ epilogue.
+
+2008-11-04 Akim Demaille <demaille@gostai.com>
+
+ 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 <demaille@gostai.com>
+
+ 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 <demaille@gostai.com>
+
+ 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 <demaille@gostai.com>
+
+ Fix iteration type.
+ * data/lalr1-fusion.cc: Use an int to iterate up to an int.
+
+2008-11-04 Akim Demaille <demaille@gostai.com>
+
+ Factor the declaration of the integer tables.
+ * data/lalr1-fusion.cc (b4_table_define): New.
+ Use it.
+
+2008-11-03 Akim Demaille <demaille@gostai.com>
+
+ Fix indentation of tables in lalr1.cc
+ * data/lalr1-fusion.cc: Fix the indentation.
+
+2008-11-03 Akim Demaille <demaille@gostai.com>
+
+ 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 <demaille@gostai.com>
+
+ 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 <demaille@gostai.com>
+
+ Let yy::variant::build return an lvalue.
+ * data/lalr1-fusion.cc (variant::build): Return a reference to the
+ object.
+
+2008-11-03 Akim Demaille <demaille@gostai.com>
+
+ Define yy::variant only when needed.
+ * data/lalr1-fusion.cc (yy::variant): Define only if variants are
+ used.
+
+2008-11-03 Akim Demaille <demaille@gostai.com>
+
+ 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 <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.
+ This is needed to prepare a forthcoming patch that fuses the three
+ stacks into one.
+
+ * data/lalr1.cc (parser::yypush_): New.
+ (parser::yynewstate): Change the semantics: instead of arriving to
+ this label when value and location have been pushed, but yystate
+ is to be pushed on the state stack, now the three of them must
+ have been pushed before. yystate still must be the new state.
+ This allows to use yypush_ everywhere instead of individual
+ handling of the stacks.
+
+2008-11-03 Akim Demaille <demaille@gostai.com>
+
+ Prefer references to pointers.
+ * data/lalr1.cc (b4_symbol_actions): New, overrides the default C
+ definition to use references instead of pointers.
+ (yy_symbol_value_print_, yy_symbol_print_, yydestruct_):
+ Take the value and location as references.
+ Adjust callers.
+
+2008-11-03 Akim Demaille <demaille@gostai.com>
+
+ stack::size instead of stack::height.
+ * data/lalr1.cc (stack::height): Rename as...
+ (stack::size): this.
+ Fix the output type.
+ Comment changes.
+
+2008-11-03 Akim Demaille <demaille@gostai.com>
+
+ Use variants to support objects as semantic values.
+ This patch was inspired by work by Michiel De Wilde. But he used Boost
+ variants which (i) requires Boost on the user side, (ii) is slow, and
+ (iii) has useless overhead (the parser knows the type of the semantic value
+ there is no reason to duplicate this information as Boost.Variants do).
+
+ This implementation reserves a buffer large enough to store the largest
+ objects. yy::variant implements this buffer. It was implemented with
+ Quentin Hocquet.
+
+ * src/output.c (type_names_output): New.
+ (output_skeleton): Invoke it.
+ * data/c++.m4 (b4_variant_if): New.
+ (b4_symbol_value): If needed, provide a definition for variants.
+ * data/lalr1.cc (b4_symbol_value, b4_symbol_action_)
+ (b4_symbol_variant, _b4_char_sizeof_counter, _b4_char_sizeof_dummy)
+ (b4_char_sizeof, yy::variant): New.
+ (parser::parse): If variants are requested, define
+ parser::union_type, parser::variant, change the definition of
+ semantic_type, construct $$ before running the user action instead
+ of performing a default $$ = $1.
+ * examples/variant.yy: New.
+ Based on an example by Michiel De Wilde.
+
+2008-11-03 Akim Demaille <demaille@gostai.com>
+
+ Parameterize the extraction of semantic values.
+ To make future changes easier, no longer rely on ".TYPE" being the
+ way to get a semantic value.
+
+ * data/c.m4 (b4_symbol_value): New.
+ Use it.
+ * data/c++.m4, data/yacc.c: Use it.
+ * data/glr.c: Use b4_symbol_value.
+ (b4_rhs_data): New.
+ Use it.
+
+2008-11-03 Akim Demaille <demaille@gostai.com>
+
+ Prepare easier M4 changes.
+ * data/lalr1.cc: Use escaped [] instead of literals to prepare
+ future changes.
+
+2008-11-02 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Initiate further development.
+ * NEWS: Create an empty section for new entries.
+ * gnulib: Update submodule to HEAD.
+
+2008-11-02 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * NEWS: Version 2.4.
+
+2008-11-02 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Prepare for next release.
+ * NEWS: Briefly mention changes since 2.3b.
+ * README: Say GNU m4 1.4.6, which we've been requiring in release
+ announcements already, not 1.4.3, which breaks the build.
+
+2008-11-02 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Say %language is experimental.
+ We're thinking of extending it's effect on output file naming. See the
+ thread at
+ <http://lists.gnu.org/archive/html/bison-patches/2008-10/msg00003.html>.
+ * NEWS: Say it's experimental.
+ * doc/bison.texinfo (Decl Summary): Say it's experimental, and so don't
+ recommend it over %skeleton for now.
+ (Bison Options): Likewise.
+ (C++ Bison Interface): Use %skeleton not %language.
+ (Calc++ Parser): Use %skeleton not %language.
+ * src/getargs.c (usage): Say it's experimental.
+
+2008-11-01 Di-an Jan <dianj@freeshell.org>
+ Paolo Bonzini <bonzini@gnu.org>
+
+ Support all Java parser class modifiers.
+ * data/java.m4 (b4_percent_define_get3): New.
+ (b4_final_if, b4_strictfp_if): New.
+ * data/lalr1.java (final, strictfp, extends, implements): Support.
+ * doc/bison.texinfo (final, strictfp, extends, implements): Add
+ documentation.
+ * tests/java.at (AT_CHECK_JAVA_MINIMAL): New.
+ (AT_CHECK_JAVA_MINIMAL_W_LEXER): New.
+ (AT_CHECK_JAVA_GREP): New.
+ (Java parser class modifiers): New test.
+ (Java parser class extends and implements): New test.
+
+ Model exception propagation better with throws and lex_throws.
+ * data/java.m4 (b4_list2): New.
+ (throws): Change default.
+ * data/lalr1.java (yyaction): Add throws.
+ (parse): Add lex_throws in addition to throws.
+ * doc/bison.texinfo (throws, lex_throws): Add documentation.
+ * tests/java.at (Java throws specifications): New test.
+
+ Improve documentation for Java parsers.
+ * doc/bison.texinfo (Java Parsers): Add subsections.
+ Don't quote first argument of %define.
+ (Java Bison Interface): Document output files. Move documentation
+ of parser class and merge into Java Parser Interface. Document
+ features that error out. Document directives with no effect.
+ Move note about Javadoc higher.
+ (Java Semantic Values): Explicitly mention stype.
+ Document that generic types cannot be used.
+ (Java Location Values): Use @deftypeivar. Document constructors.
+ Correct return value for toString.
+ (Java Parser Interface): List undocumented constants/fields.
+ Move documentation of fields added by %parse-param closer to list
+ of members. Document that token names are added as fields.
+ Document constructors accurately. Remove error method.
+ (Java Scanner Interface): Move note on %pure-parser to Java Bison
+ Interface. Describe %code lexer and yylex accutately.
+ Remove documentation that does not match the code.
+ (Java Action Features): New.
+ (Java Differences): Add reference. Add item on semantic values.
+ Add note about @{ ... @}. Clarify %% epilogue placement.
+ (Java Declarations Summary): New.
+
+ Fix Java skeleton.
+ * data/java.m4 (b4_prefix): Correct quoting for m4_define_default.
+ (b4_remove_comma): Quote test argument.
+ (b4_identification): Remove "bison" field.
+ * tests/java.at (Java parser class and package names): New test.
+ (Java %parse-param and %lex-param): New test.
+ (Java stype, position_class and location_class): New test.
+
+2008-10-31 Di-an Jan <dianj@freeshell.org>
+
+ * data/lalr1.jave: Update copyright years.
+ (YYParser): Correct name of "generated from" file in Javadoc:
+ use b4_file_name instead of @ofile@.
+ (Location constructor): Correct Javadoc parameter name.
+ (yylloc): Add missing opening m4 quote after b4_location_if.
+ This removes a stray [ in the Javadoc of Lexer.getStartPos.
+ (Lexer.yyerror): Fix incorrect m4 and Javadoc.
+ (YYParser constructor): Correct Javadoc parameter name.
+
+2008-10-30 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Always put auxiliary code files in the same dir as other output files.
+ * src/files.c (compute_file_name_parts): When the user specifies
+ --output but not --file-prefix, extract the directory prefix from the
+ file prefix not from the grammar file name. This affects the location
+ of files like location.hh generated by the C++ skeleton. The includes
+ in the other output files require this fix.
+ * tests/output.at (AT_CHECK_OUTPUT): Automatically create directories
+ for expected output files.
+ (Output files): Add a test for the above.
+
+2008-10-29 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * gnulib: Update submodule to HEAD.
+
+2008-10-28 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Update copyright year.
+ * src/files.c: Here.
+
+2008-10-28 Di-an Jan <dianj@freeshell.org> (tiny change)
+
+ Don't overwrite the input file.
+ * src/files.c (output_file_name_check): Fatal error if using input file
+ for output.
+ * tests/output.at: (AT_CHECK_CONFLICTING_OUTPUT): Add return status
+ argument.
+ (Conflicting output files): Add test.
+
+2008-10-28 Akim Demaille <demaille@gostai.com>
+
+ Space changes.
+ * data/lalr1.cc: Formatting changes.
+
+2008-10-28 Akim Demaille <demaille@gostai.com>
+
+ Don't define debugging functions when !YYDEBUG.
+ * data/lalr1.cc (debug_stream, set_debug_stream)
+ (debug_level_type, debug_level, set_debug_level): Don't
+ declare them when YYDEBUG is not defined.
+ The implementation are already YYDEBUG-aware.
+
+2008-10-28 Akim Demaille <demaille@gostai.com>
+
+ Prefer "continue" for empty loop bodies.
+ * etc/bench.pl.in: Use "continue" instead of {}.
+
+2008-10-28 Akim Demaille <demaille@gostai.com>
+
+ Space and comments changes.
+ * data/c++.m4, data/glr.c, data/lalr1.cc: Copyright year changes.
+ * data/c.m4, data/lalr1.cc: Space changes.
+
+2008-10-28 Akim Demaille <demaille@gostai.com>
+
+ Make gnulib a submodule.
+ * gnulib: New.
+ * .gitmodules (gnulib): New.
+
+2008-10-18 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Fix yyerror_range for user-defined location type in C++. Reported by
+ Georg Sauthoff at
+ <http://lists.gnu.org/archive/html/bug-bison/2008-08/msg00008.html>.
+ * data/lalr1.cc (parse): Change type of yyerror_range to location_type.
+ * THANKS (Georg Sauthoff): Add.
+
+2008-10-18 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Update several administrative files mainly to facilitate releasing.
+ * HACKING (Administrivia): Make the git-merge-changelog notes more
+ helpful.
+ (Test suite): Don't say lalr1.cc is not exercised in the test suite.
+ (Release Procedure): Update for git and add numerous details that were
+ previously missing.
+ * Makefile.am (EXTRA_DIST): Remove Makefile.cfg and Makefile.maint.
+ * maint.mk (announcement): Don't list bison as a bootstrap tool so
+ that announcements don't claim we bootstrapped with whatever bison
+ happened to be in PATH. Add flex as a bootstrap tool.
+ * Makefile.maint: Remove, previously replaced by maint.mk.
+ * Makefile.cfg: Remove, and migrate settings to...
+ * cfg.mk: ... here for the sake of `make announcement'.
+ * bootstrap.conf (gnulib_modules): Add announce-gen.
+ * README: Say GNU Bison instead of just Bison. Suggested by Karl
+ Berry.
+
+2008-10-08 Di-an Jan <dianj@freeshell.org> (tiny change)
+
+ Small but important bugfixes for the Java skeleton.
+ * data/lalr1.java (yyerror): Change Location to b4_location_type.
+ (yy_symbol_print): Call toString on yyvaluep.
+
+2008-08-29 Akim Demaille <demaille@gostai.com>
+
+ Clarify UPDATED use.
+ * doc/bison.texinfo: It refers to the last edition of this file,
+ not to the release date of Bison.
+ Reported by Joel E. Denny.
+
+2008-08-29 Akim Demaille <demaille@gostai.com>
+
+ * README: Update FAQ pointer.
+ Reported by Joel E. Denny.
+
+2008-08-27 Eric Blake <ebb9@byu.net>
+
+ Resync m4sugar from autoconf.
+ * data/m4sugar/m4sugar.m4 (m4_defn, m4_popdef, m4_undefine)
+ (m4_init): Adjust to latest m4.git changes.
+ (m4_mapall_sep, _m4_list_cmp, m4_version_compare): Reduce side
+ effects.
+ * data/m4sugar/foreach.m4 (_m4_shiftn): Fix off-by-one bug.
+ (_m4_list_cmp): Reduce side effects.
+
+2008-08-27 Akim Demaille <demaille@gostai.com>
+
+ Check yyerrok in calc.at.
+ * tests/calc.at (calc.y): Use yyerrok on "( error )".
+ (AT_CHECK_CALC): Add a check that ensures that yyerrok works as
+ expected.
+
+2008-08-27 Akim Demaille <demaille@gostai.com>
+
+ Support yyerrok in lalr1.cc.
+ YYBACKUP is still to import back into lalr1.cc.
+ * data/lalr1.cc (yyerrork, yyclearin, YYRECOVERING): Define.
+
+2008-08-26 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ For maintainer-check*, don't recompile for a $(VERSION) update.
+ * cfg.mk: New file.
+ (_is-dist-target): Override the one in GNUmakefile.
+ * Makefile.am (EXTRA_DIST): Add cfg.mk.
+
+2008-08-26 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Update for recent change to gnulib.
+ * src/parse-gram.y: Don't include strverscmp.h. It comes from
+ string.h now.
+
+2008-08-15 Eric Blake <ebb9@byu.net>
+
+ Remaining m4sugar merge from autoconf.
+ * data/m4sugar/m4sugar.m4: Copy entire file from autoconf.
+ * data/m4sugar/foreach.m4: New file, copied from autoconf.
+ * data/Makefile.am (dist_m4sugar_DATA): Distribute it.
+ * src/output.c (output_skeleton): Tell m4 how to find it.
+
+ Partial m4sugar merge from autoconf: m4_map.
+ * data/m4sugar/m4sugar.m4 (m4_fst): Delete.
+ (m4_map, m4_map_sep, _m4_map): Rewrite more efficiently.
+ (m4_apply, _m4_apply, m4_mapall, m4_mapall_sep): New macros.
+ * data/java.m4 (b4_token_enums): Use more efficient short-circuit
+ for empty list.
+ * data/c.m4 (b4_token_defines, b4_token_enums, b4_c_ansi_formals):
+ Likewise.
+ (b4_parse_param_for): Avoid m4_fst, now that autoconf no longer
+ declares it.
+
+2008-08-07 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Keep .version and PACKAGE_VERSION in sync.
+ * Makefile.am ($(top_srcdir)/.version): Declare configure as a
+ dependency, and add comments justifying this in more detail. Discussed
+ starting at
+ <http://lists.gnu.org/archive/html/bison-patches/2008-07/msg00022.html>.
+
+2008-08-06 Eric Blake <ebb9@byu.net>
+
+ Partial m4sugar merge from autoconf: m4_shiftn.
+ * data/m4sugar/m4sugar.m4 (m4_shiftn): Faster implementation.
+ (m4_shift2, m4_shift3): New macros.
+ (m4_case, m4_bmatch, m4_bpatsubsts, m4_join): Adjust clients.
+ * data/c.m4 (b4_c_function_def, b4_c_ansi_function_def)
+ (b4_c_ansi_function_decl, b4_c_function_call): Likewise.
+ * data/java.m4 (b4_remove_comma): Likewise.
+
+ Partial m4sugar merge from autoconf: m4_wrap vs. m4 1.6.
+ * data/m4sugar/m4sugar.m4 (m4_unquote, m4_wrap_lifo): New macros.
+ (m4_wrap): Guarantee FIFO order, in spite of m4 1.6.
+ (m4_init): Consolidate wrapped text into single m4_wrap.
+ * data/bison.m4 (b4_check_user_names_wrap): Stick with LIFO order
+ in wrapped text.
+
+2008-08-05 Eric Blake <ebb9@byu.net>
+
+ Partial m4sugar merge from autoconf: builtins, version.m4.
+ * data/m4sugar/m4sugar.m4 (changeword): Nuke.
+ (m4_prepend): Remove, as it is unused and inherently quadratic,
+ whereas m4_append is linear in newer m4.
+ (m4_mkstemp): New builtin.
+ (m4_symbols): Make rename conditional.
+ (m4_version_prereq): Ensure fatal error if used in bison, which
+ intentionally lacks version.m4.
+
+ Fix comments in m4sugar.
+ * data/m4sugar/m4sugar.m4: Comment changes, borrowed from autoconf.
+
+2008-08-02 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Update for recent .gitignore fix in Gnulib.
+ * bootstrap: Back out 2008-07-18 hack now that gnulib-tool creates
+ anchored .gitignore entries.
+
+2008-08-02 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Set gnu or gnits strictness.
+ * configure.ac (AM_INIT_AUTOMAKE): Set gnu strictness during
+ development and gnits strictness for releases. Based on Eric Blake's
+ suggestion at
+ <http://lists.gnu.org/archive/html/bug-bison/2008-07/msg00019.html>.
+
+2008-07-31 Paolo Bonzini <bonzini@gnu.org>
+
+ * NEWS: Clarify documentation of %language.
+
+2008-07-31 Paolo Bonzini <bonzini@gnu.org>
+
+ Support usage of git-merge-changelog.
+ * .gitattributes: New.
+ * HACKING: Document usage of git-merge-changelog.
+ * bootstrap: Install git-merge-changelog entries in .git/config
+ if appropriate.
+
+2008-07-27 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Remove remaining dependence on CVS Id keyword.
+ * ChangeLog: For the sake of people still using CVS, don't use dollars
+ when mentioning Id.
+ * data/xslt/bison.xsl: Remove Id from header comments, where it was
+ unusual anyway.
+ * data/xslt/xml2dot.xsl: Likewise.
+ * data/xslt/xml2text.xsl: Likewise.
+ * data/xslt/xml2xhtml.xsl: Likewise.
+ * doc/Doxyfile.in (PROJECT_NUMBER): Don't use ID.
+ * doc/Makefile.am (neutralize): Remove, no longer needed.
+ (.x.1): Don't use neutralize.
+ (edit): Don't substitute for ID.
+ (Doxyfile): Don't define Id, and thus don't depend on ChangeLog.
+
+2008-07-27 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Fix dependence on computed configure variables.
+ * doc/Makefile.am (common_dep): Depend on $(top_srcdir)/configure not
+ $(top_srcdir)/configure.ac so that changes to computed variables, such
+ as PACKAGE_VERSION, are seen.
+ * tests/Makefile.am ($(srcdir)/package.m4): Likewise.
+
+2008-07-20 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Update copyright dates for recent changes.
+ * Makefile.am: Here.
+ * src/Makefile.am: Here.
+ * src/reduce.c: Here.
+ * tests/reduce.at: Here.
+
+2008-07-18 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Use git-version-gen for version names between releases.
+ * .cvsignore (.tarball-version, GNUmakefile, *~): Add.
+ * .gitignore (/.tarball-version, /GNUmakefile, /*~): Add.
+ * .prev-version: New.
+ * .version.in: Remove.
+ * ChangeLog: Remove the Id previously used for capturing the CVS
+ revision.
+ * GNUmakefile: Remove, now copied from Gnulib.
+ * Makefile.am: Add code suggested by comments in
+ build-aux/git-version-gen.
+ (EXTRA_DIST): Remove GNUmakefile, handled by Gnulib. Add maint.mk,
+ .prev-version, and .version.
+ * NEWS (2.3b+): Rename to...
+ (?.?): ... this because we're dropping the "+" version naming scheme,
+ but, in general, we still can't be sure of our next release name.
+ * bootstrap: Add a quick hack to remove from .gitignore the
+ GNUmakefile entry that gnulib adds. We already have a /GNUmakefile
+ entry. This should really be fixed in gnulib instead.
+ * bootstrap.conf (gnulib_modules): Add gnumakefile.
+ * configure.ac (AC_INIT): Set version name by invoking
+ build-aux/git-version-gen.
+ (AC_CONFIG_FILES): Remove .version, now generated by
+ build-aux/git-version-gen.
+ * maint.mk: New, copied from coreutils.
+ * doc/.cvsignore (bison.1): Add.
+ * doc/.gitignore (/bison.1): Add.
+ * doc/bison.1: Remove, generated.
+ * src/.cvsignore (revision.c): Remove.
+ * src/.gitignore (/revision.c): Remove.
+ * src/Makefile.am (bison_SOURCES): Remove revision.c and revision.h.
+ (BUILT_SOURCES): Remove revision.c.
+ (revision.c): Remove.
+ * src/getargs.c (version): Don't print revision after the VERSION.
+ * src/revision.h: Remove.
+
+2008-07-16 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Fix untranslatable composition of sentences. Reported by Goran
+ Uddeborg at
+ <http://lists.gnu.org/archive/html/bug-bison/2008-06/msg00000.html>.
+ * THANKS (Goran Uddeborg): Add.
+ * src/reduce.c (reduce_print): Report the number of nonterminals and
+ rules useless in the grammar in separate sentences.
+ * tests/reduce.at (Useless Rules): Update output.
+ (Reduced Automaton): Likewise.
+ (Underivable Rules): Likewise.
+ (Empty Language): Likewise.
+
+2008-07-15 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Fix some .gitignore and .cvsignore problems.
+ * bootstrap (insert_sorted_if_absent): Replace all uses with...
+ (insert_vc_ignore): ... this new function, which prepends `/' to all
+ .gitignore entries before passing them to insert_sorted_if_absent.
+ * bootstrap.conf (vc_ignore): Set to '.cvsignore .gitignore' so that
+ .cvsignore files are maintained even though Bison developers run
+ bootstrap while using Git.
+ * .cvsignore (*.patch *.log log patches applied): Remove, apparently
+ unneeded by Bison.
+ (gnulib): Add.
+ * .gitignore (/*.patch *.log log patches applied): Remove, broken and
+ unneeded. Reported by Eric Blake.
+ * lib/.gitignore (/*~): Add.
+ * po/.cvsignore, runtime-po/.cvsignore: Sync with .gitignore.
+ * examples/calc++/.gitignore (/calc++.exe): Add. Reported by Eric
+ Blake.
+ * src/.gitignore (/bison.exe): Add. Reported by Eric Blake.
+
+2008-07-15 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Improve forward-compatibility with GNU M4. Reported by Eric Blake at
+ <http://lists.gnu.org/archive/html/bug-bison/2008-07/msg00000.html>.
+ * bootstrap.conf (gnulib_modules): Add unsetenv.
+ * lib/.gitignore, lib/.cvsignore (/unsetenv.c): Add.
+ * m4/.gitignore, m4/.cvsignore (/environ.m4): Add.
+ (/setenv.m4): Add.
+ * src/output.c (output_skeleton): For the m4 invocation, pass -dV as
+ the first argument because it may become position-dependent, and unset
+ POSIXLY_CORRECT so Bison's skeletons have access to GNU M4 extensions.
+ Add comments explaining these issues in more detail.
+
+2008-07-14 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Add .gitignore everywhere based on .cvsignore.
+ * .gitignore: New.
+ * build-aux/.gitignore: New.
+ * data/.gitignore: New.
+ * doc/.gitignore: New.
+ * etc/.gitignore: New.
+ * examples/.gitignore: New.
+ * examples/calc++/.gitignore: New.
+ * lib/.gitignore: New.
+ * m4/.gitignore: New.
+ * po/.gitignore: New.
+ * runtime-po/.gitignore: New.
+ * src/.gitignore: New.
+ * tests/.gitignore: New.
+
+2008-05-27 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * NEWS (2.3b+): New section, empty for now.
+ * configure.ac (AC_INIT): 2.3b -> 2.3b+.
+
+2008-05-27 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * NEWS (2.3b): Update release date since there has been a delay in
+ getting the announcements and tarballs out.
+
+2008-05-23 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * NEWS: Version 2.3b.
+ * configure.ac (AC_INIT): Likewise.
+ (PACKAGE_COPYRIGHT_YEAR): Update to 2008.
+
+2008-05-23 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * HACKING: Don't say don't mention HACKING in the ChangeLog. We've
+ been doing it for years.
+ (Test suite): Mention maintainer-push-check and maintainer-xml-check.
+ (Release Procedure): Add FIXME about make alpha being unmaintained.
+
+2008-05-13 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * data/yacc.c: Reformat m4 a little for readability.
+ * src/lalr.c (build_relations): Correct comment.
+
+2008-05-12 Juan Manuel Guerrero <juan.guerrero@gmx.de>
+
+ DJGPP specific issue.
+ * djgpp/config.sed: Fixes required to run configure scripts generated
+ by autoconf 2.62.
+
+2008-05-07 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * HACKING (Release Procedure): translation@iro.umontreal.ca is now
+ coordinator@translationproject.org.
+
+2008-05-06 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * THANKS: Add Eric Blake.
+
+2008-04-23 Eric Blake <ebb9@byu.net>
+
+ Revert prior patch, by working around autoconf regression.
+ * tests/output.at (m4_expand): Add workaround for autoconf 2.62.
+ ("Output file name: ("): Uncomment test.
+ ("Output file name: )"): Likewise.
+ Based on an idea from Noah Misch.
+
+2008-04-21 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Work-around an Autoconf 2.62 AT_SETUP bug that was not present in
+ 2.61. Reported by Juan Manuel Guerrero at
+ <http://lists.gnu.org/archive/html/bug-bison/2008-04/msg00011.html>.
+ * tests/output.at ("Output file name: ("): Comment out test case for
+ now.
+ ("Output file name: )"): Likewise.
+
+2008-04-21 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * GNUmakefile: Update git-version-gen invocation so make dist
+ succeeds.
+
+2008-04-21 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Update to the current gnulib CVS repository, and fix trigraph handling
+ in Bison.
+ * bootstrap: Update gnulib CVS repository URL.
+ (symlink_to_dir): Encapsulate the code that guarantees the destination
+ directory exists into...
+ (check_dst_dir): ... this new function, and...
+ (cp_mark_as_generated): ... reuse it here so that bootstrap doesn't
+ fail when copying files into lib/uniwidth/.
+ * src/output.c (prepare_symbols): When writing yytname muscles, where
+ symbol names will be encoded in C-string literals, tell quotearg to
+ escape trigraphs. This used to be the default in gnulib.
+ * tests/regression.at (Token definitions): Because of the change in
+ gnulib's quotearg behavior, string_as_id in parse-gram.y no longer
+ escapes trigraphs in symbol names. Thus, yytname no longer has
+ trigraphs unnecessarily doubly escaped. Update test case output.
+ Extend test case to be sure Bison's own error messages will no longer
+ have trigraphs in symbol names unnecessarily escaped once.
+
+2008-04-20 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Fix make dist infinite loop reported by Juan Manuel Guerrero at
+ <http://lists.gnu.org/archive/html/bug-bison/2008-01/msg00009.html>.
+ * .cvsignore: Add .version.
+ * .version.in: New.
+ * bootstrap.conf (gnulib_modules): Add git-version-gen.
+ * configure.ac (AC_CONFIG_FILES): Add .version.
+ * build-aux/.cvsignore: Add git-version-gen.
+
+2008-03-08 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * NEWS (2.3a+): Mention that -g now takes an argument.
+ * doc/bison.texinfo (Bison Options): Reword -W entry a little for
+ consistency. Update the -g and -x entries now that they take
+ arguments. Use brackets to indicate optional arguments.
+ * src/getargs.c (usage): Explain the relationship between arguments of
+ long and short options more completely. Document --defines and -d
+ separately since the former takes an argument but, for POSIX Yacc, the
+ latter does not.
+ (short_options): Let -W take an optional argument like --warnings.
+ (getargs): Sort cases.
+
+2008-02-28 Akim Demaille <demaille@gostai.com>
+
+ * doc/bison.texinfo: Fix a few typos.
+
+2008-02-28 Akim Demaille <akim@epita.fr>
+
+ * doc/bison.texinfo (Bison Options): Document -W.
+ Based on Joel E. Denny's NEWS entry, and Automake's documentation.
+
+2008-02-28 Akim Demaille <akim@epita.fr>
+
+ * src/getargs.c (short_options): Split and sort for readability.
+ -g and -x take optional arguments, just like their long options.
+ * build-aux/cross-options.pl: Use /x to make the regexp easier to
+ understand.
+ Fix the handling of $opt which resulted in all the argument to be
+ considered as optional.
+
+2008-02-22 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * NEWS (2.3a+): Don't say %language is experimental. Mention Java and
+ say its interface is experimental.
+ * doc/bison.texinfo (Decl Summary): In the %language entry, mention
+ Java.
+ (Bison Options): In the -L and --language entry, mention Java.
+ (Java Bison Interface): Say the interface is experimental.
+ * src/getargs.c (usage): Mention -L and --language.
+
+ * NEWS (2.3a+): Say the push parsing interface is experimental.
+ * doc/bison.texinfo (Push Decl): Likewise.
+ (Decl Summary): Likewise in the "%define api.push_pull" entry.
+ (Push Parser Function): Likewise.
+ (Pull Parser Function): Likewise.
+ (Parser Create Function): Likewise.
+ (Parser Delete Function): Likewise.
+ (Table of Symbols): Likewise in the yypstate_delete, yypstate_new,
+ yypull_parse, and yypush_parse entries.
+
+ * NEWS (2.3a+): Mention XML support, and say the schema is
+ experimental.
+ * doc/bison.texinfo (Bison Options): Mention -x and --xml.
+ * src/getargs.c (usage): Say the XML schema is experimental.
+
+ * NEWS (2.3a+): Say option instead of flag.
+
+2008-02-21 Wojciech Polak <polak@gnu.org>
+
+ * data/xslt/xml2xhtml.xsl (xsl:template match="/"): Change footer
+ text.
+
+2008-02-20 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Fix impure push parser compile error reported by Bob Rossi at
+ <http://lists.gnu.org/archive/html/help-bison/2008-02/msg00023.html>.
+ * data/yacc.c: Clean up whitespace in the output a little.
+ (yypstate_allocated): Define for impure push parsers regardless of
+ whether the pull interface is also requested.
+ * tests/push.at (Push Parsing: Multiple impure instances): Extend to
+ check impure push parsers without the pull interface.
+
+ * data/yacc.c (yypstate_new): Don't try to invoke yyerror since
+ yyerror takes arguments specified by %parse-param while yypstate_new
+ does not.
+ * doc/bison.texinfo (Parser Create Function): Document that
+ yypstate_new returns 0 for multiple impure parser instances.
+ * tests/push.at (Push Parsing: Multiple impure instances): Update
+ expected stderr output.
+
+2008-02-19 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * runtime-po/POTFILES.in (push.c): Remove.
+
+2008-02-17 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * data/Makefile.am (dist_pkgdata_DATA): Remove push.c.
+ * data/push.c: Rename to...
+ * data/yacc.c: ... this, overwriting it.
+ * etc/bench.pl.in (bench_grammar): `%pure-parser'-> `%define api.pure'.
+ `%push-pull-parser' -> `%define api.push_pull "both"'.
+ Remove old yacc.c tests, and update push.c tests to yacc.c.
+
+2008-02-17 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * data/bison.m4 (b4_percent_code_get): Output %code block comments like
+ `"%code top" blocks' instead of `%code "top" blocks'.
+ * data/push.c: Import yacc.c changes from 2008-01-09 and 2007-08-03.
+ Clean up whitespace in the output a little.
+
+2008-02-16 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Fix documentation problems reported by Tim Josling at
+ <http://lists.gnu.org/archive/html/bug-bison/2008-01/msg00013.html>.
+ * NEWS (2.3a+): Mention removal of --no-parser, -n, and %no-parser.
+ * doc/bison.texinfo (Token Decl): Token numbers are *nonnegative*
+ integers. Explain the effect of literal string aliases on error
+ messages. Copy token 0 documentation from the C++ skeleton
+ documentation.
+
+2008-02-16 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Accept a token number in a %left, %right, or %nonassoc for POSIX
+ conformance. Reported by Tim Josling at
+ <http://lists.gnu.org/archive/html/bug-bison/2008-01/msg00010.html>.
+ * NEWS (2.3a+): Mention.
+ * doc/bison.texinfo (Precedence Decl): Describe how literal strings
+ and code numbers are treated by precedence declarations.
+ * src/parse-gram.y (precedence_declaration): Use symbols.prec instead
+ of symbols.1.
+ (symbols.prec): New, just like symbols.1 but uses symbol.prec instead
+ of symbol.
+ (symbol.prec): New, just like symbol but allows INT.
+ * src/symtab.c (symbol_user_token_number_set): Remove an aver that no
+ longer holds.
+ * tests/regression.at (Token number in precedence declaration): New
+ test case.
+
+2008-02-06 Juan Manuel Guerrero <juan.guerrero@gmx.de>
+
+ DJGPP specific issues.
+ * djgpp/config.bat: Add filenames that are not 8.3 clean and that must
+ be changed. Copyright timestamp adjusted.
+ * djgpp/config.sed: Add filenames that are not 8.3 clean and that must
+ be changed. Copyright timestamp adjusted.
+ * djgpp/config.site: Copyright timestamp adjusted.
+ * djgpp/config_h.sed: Copyright timestamp adjusted.
+ * djgpp/djunpack.bat: Copyright timestamp adjusted.
+ * djgpp/fnchnage.lst: Add filenames that are not 8.3 clean to the
+ filename translation list.
+ * djgpp/subpipe.c (init_subpipe): Check the environment variables
+ TMPDIR, TMP and TEMP, in that order, to determinate where the temp
+ files shall be created. Before trying to use the temp dir where the
+ environment variable points to check that the dir really exists. If
+ not default to the cwd as temp dir. Copyright timestamp adjusted.
+ * djgpp/subpipe.h: Copyright timestamp adjusted.
+ * djgpp/testsuite.sed: Copyright timestamp adjusted.
+
+2008-01-30 Paul Eggert <eggert@cs.ucla.edu>
+
+ * doc/bison.texinfo: Update Back-Cover text to reflect new GNU wording.
+
+2008-01-09 Paul Eggert <eggert@cs.ucla.edu>
+
+ * data/yacc.c (yyparse): Correct the comment when locations aren't used.
+ Problem reported by Claudio Saavedra in
+ <http://lists.gnu.org/archive/html/bug-bison/2008-01/msg00003.html>.
+
+2008-01-05 Wojciech Polak <polak@gnu.org>
+
+ * data/xslt/xml2xhtml.xsl (xsl:template match="/"): Precede an XHTML
+ document's title with the input grammar file name.
+
+2007-12-22 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Automate regression testing of the XML/XSLT implementation. Discussed
+ starting at
+ <http://lists.gnu.org/archive/html/bison-patches/2007-11/msg00021.html>.
+ * configure.ac (XSLTPROC): New substitution.
+ * Makefile.am (maintainer-xml-check): New phony target invoking...
+ * tests/Makefile.am (maintainer-xml-check): ... this new phony target
+ invoking make maintainer-check with BISON_TEST_XML=1.
+ * tests/atlocal.in (XSLTPROC): New.
+ * tests/local.at (AT_BISON_CHECK): New macro to (1) instruct Valgrind
+ not to report reachable memory when Bison is expected to have a
+ non-zero exit status and (2) to compare XML/XSLT output with --graph
+ and --report=all output for every working grammar when
+ BISON_TEST_XML=1.
+ (AT_BISON_CHECK_NO_XML): Likewise, but skip XML checks.
+ (AT_BISON_CHECK_XML): New.
+ (AT_QUELL_VALGRIND): New.
+ * tests/testsuite.at (ORIGINAL_AT_CHECK): Remove this and...
+ (AT_CHECK): ... don't redefine this since this was the old way to
+ quell Valgrind.
+ * tests/actions.at: Rewrite all AT_CHECK invocations for bison as
+ AT_BISON_CHECK invocations.
+ * tests/c++.at: Likewise.
+ * tests/calc.at: Likewise.
+ * tests/conflicts.at: Likewise.
+ * tests/cxx-type.at: Likewise.
+ * tests/existing.at: Likewise.
+ * tests/glr-regression.at: Likewise.
+ * tests/headers.at: Likewise.
+ * tests/input.at: Likewise.
+ * tests/java.at: Likewise.
+ * tests/output.at: Likewise.
+ * tests/push.at: Likewise.
+ * tests/reduce.at: Likewise.
+ * tests/regression.at: Likewise.
+ * tests/sets.at: Likewise.
+ * tests/skeletons.at: Likewise.
+ * tests/synclines.at: Likewise.
+ * tests/torture.at: Likewise.
+ (Big triangle): Use AT_BISON_CHECK_NO_XML instead since this grammar
+ tends to hang xsltproc.
+ (Big horizontal): Likewise.
+
+2007-12-08 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ In XML output, remove redundant class attribute on symbol element.
+ * data/xslt/bison.xsl (xsl:key name="bison:symbolByName"): New.
+ * data/xslt/xml2xhtml.xsl (xsl:template match="symbol"): Use it to
+ look up a symbol to determine whether it's a nonterminal or terminal.
+ * src/gram.c (rule_rhs_print_xml): Remove class attribute.
+ * src/state.c (state_rule_lookahead_tokens_print_xml): Likewise.
+
+ Add prec/assoc information to XML output.
+ * src/gram.c (grammar_rules_print_xml): For each rule that has a
+ %prec, add a percent_prec attribute.
+ * src/print-xml.c (print_grammar): For each terminal that has a
+ precedence or associativity, add a prec or assoc attribute.
+ (xml_indent): New.
+ (xml_puts): Use xml_indent.
+ (xml_printf): Use xml_indent.
+ * src/print-xml.h (xml_indent): Prototype.
+
+ * tests/existing.at (GNU pic Grammar): Fix a rule miscopied from
+ <http://lists.gnu.org/archive/html/bug-bison/2003-04/msg00026.html>.
+
+2007-12-08 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * data/xslt/bison.xsl (bison:ruleNumber): Rename to...
+ (bison:ruleByNumber): ... this for clarity.
+ * data/xslt/xml2dot.xsl (xsl:template match="item"): Update.
+ * data/xslt/xml2text.xsl (xsl:template match="item"): Update.
+ (xsl:template match="reduction"): Update.
+ (xsl:template match="item"): Update.
+ (xsl:template match="reduction"): Update.
+
+ In the XML output, don't print the list of rules where symbols appear.
+ Compute it in XSLT instead. Discussed at
+ <http://lists.gnu.org/archive/html/bison-patches/2007-09/msg00024.html>.
+ * data/xslt/bison.xsl (bison:ruleByLhs): New.
+ (bison:ruleByRhs): New.
+ * data/xslt/xml2text.xsl (xsl:template match="terminal"): Use
+ bison:ruleByRhs.
+ (xsl:template match="terminal/rule"): Remove.
+ (xsl:template match="nonterminal"): Use bison:ruleByLhs and
+ bison:ruleByRhs.
+ (xsl:template match="nonterminal/left/rule|nonterminal/right/rule"):
+ Remove.
+ * data/xslt/xml2xhtml.xsl (xsl:template match="terminal"): Use
+ bison:ruleByRhs and mode="number-link" for rule template.
+ (xsl:template match="terminal/rule"): Remove.
+ (xsl:template match="nonterminal"): Use bison:ruleByLhs and
+ bison:ruleByRhs and mode="number-link" for rule template.
+ (xsl:template match="nonterminal/left/rule|nonterminal/right/rule"):
+ Rewrite as...
+ (xsl:template match="rule" mode="number-link"): ... this.
+ * src/print-xml.c (print_grammar): Don't print the list of rules.
+
+2007-12-01 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Don't let --report affect XML output; always print all information.
+ Discussed at
+ <http://lists.gnu.org/archive/html/bison-patches/2007-09/msg00020.html>.
+ * src/conflicts.c (log_resolution): Implement.
+ * src/print-xml.c (print_core): Implement.
+ (print_state): Implement.
+ (print_xml): Implement.
+
+ * NEWS (2.3a+): Fix quotes.
+ * src/parse-gram.y (prologue_declaration): For consistency with -v,
+ don't let %verbose clear the list specified by --report.
+
+2007-11-26 Akim Demaille <akim@epita.fr>
+
+ * data/Makefile.am (dist_pkgdata_DATA): Ship and install bison.xsl.
+
+2007-11-24 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ In the XML output, list useless and unused symbols and rules with the
+ useful ones and add a "usefulness" attribute. Discussed starting at
+ <http://lists.gnu.org/archive/html/bison-patches/2007-09/msg00017.html>.
+ * src/gram.c (grammar_rules_partial_print_xml): Remove.
+ (grammar_rules_print_xml): Print all rules instead of just those
+ useful in the grammar, and add a "usefulness" attribute.
+ * src/gram.h (grammar_rules_partial_print_xml): Remove prototype.
+ * src/print-xml.c (print_rules_useless_in_parser): Remove.
+ (print_grammar): Print all nonterminals instead of just useful ones,
+ and add a "usefulness" attribute to nonterminals and terminals.
+ (print_xml): Don't print a separate "reductions" or
+ "rules-useless-in-parser" element.
+ * src/reduce.c (reduce_output): Use reduce_token_unused_in_grammar.
+ (reduce_xml): Remove.
+ (reduce_token_unused_in_grammar): New.
+ (reduce_nonterminal_useless_in_grammar): New.
+ * src/reduce.h (reduce_xml): Remove prototype.
+ (reduce_token_unused_in_grammar): Add prototype.
+ (reduce_nonterminal_useless_in_grammar): Add prototype.
+ * data/xslt/xml2text.xsl: Update for XML changes.
+ * data/xslt/xml2xhtml.xsl: Update for XML changes.
+ * tests/reduce.at (Useless Terminals): Update output.
+ (Useless Rules): Update output.
+ (Reduced Automaton): Update output.
+
+ Say "Terminals unused in grammar" instead of "Unused terminals".
+ * NEWS (2.3a+): Update.
+ * doc/bison.texinfo (Understanding): Update example output.
+ * src/reduce.c (reduce_output): Implement.
+ * data/xslt/xml2text.xsl: Implement.
+ * data/xslt/xml2xhtml.xsl: Implement.
+
+2007-11-18 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Accept --report-file=FILE to override the default `.output' filename.
+ * NEWS (2.3a+): Mention.
+ * doc/bison.texinfo (Bison Options): Add an entry.
+ * src/files.c (compute_output_file_names): Don't override
+ spec_verbose_file if already set.
+ * src/getargs.c (usage): Document --report-file.
+ (REPORT_FILE_OPTION): New anonymous enum member.
+ (long_options): Add entry for it.
+ (getargs): Add case for it setting spec_verbose_file.
+
+ * build-aux/cross-options.pl: Don't record a short option just because
+ there's an arg.
+ * doc/.cvsignore: Add yacc.1.
+
+2007-11-14 Akim Demaille <akim@epita.fr>
+
+ * doc/yacc.1.in: New.
+ * configure.ac, doc/Makefile.am: Adjust.
+ * configure.ac (PACKAGE_COPYRIGHT_YEAR): New substitution, and new
+ config.h symbol.
+ Use AC_SUBST for assignments too.
+ * src/getargs.c (version): Use PACKAGE_COPYRIGHT_YEAR.
+
+2007-11-10 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * src/gram.c: Remove comments that duplicate comments in gram.h.
+
+ When reporting useless rules and nonterminals, say "useless in grammar"
+ instead of "useless", and say "useless in parser" instead of "never
+ reduced". Discussed starting at
+ <http://lists.gnu.org/archive/html/bison-patches/2007-10/msg00033.html>.
+ * NEWS (2.3a+): Mention this change.
+ * data/xslt/xml2text.xsl: Update output text and expected input XML
+ element names to match changes below.
+ * data/xslt/xml2xhtml.xsl: Likewise.
+ (xsl:template match="bison-xml-report"): Add missing entry in Table of
+ Contents: "Rules useless in parser due to conflicts".
+ * doc/bison.texinfo (Decl Summary): Reword a little.
+ (Understanding): Update example output for changes below.
+ * src/gram.c: (rule_useful_p): Rename to...
+ (rule_useful_in_grammar_p): ... this.
+ (rule_useless_p): Rename to...
+ (rule_useless_in_grammar_p): ... this.
+ (rule_never_reduced_p): Rename to...
+ (rule_useless_in_parser_p): ... this.
+ (grammar_rules_print): Update for renames.
+ (grammar_rules_print_xml): Update for renames.
+ (grammar_rules_never_reduced_report): Rename to...
+ (grammar_rules_useless_report): ... this since it is used for either
+ kind of useless rule.
+ * src/gram.h: Reword comments and update function names in prototypes.
+ * src/main.c (main): Say "rule useless in parser due to conflicts".
+ * src/print-xml.c (print_rules_never_reduced): Rename to...
+ (print_rules_useless_in_parser): ... this, and rename output XML
+ element "rules-never-reduced" to "rules-useless-in-parser".
+ (print_xml): Update for rename.
+ * src/print.c (print_results): Say "Rules useless in parser due to
+ conflicts".
+ * src/reduce.c (reduce_grammar_tables): Say "rule useless in grammar".
+ (nonterminals_reduce): Say "nonterminal useless in grammar".
+ (reduce_output): Say "Nonterminals useless in grammar".
+ Say "Rules useless in grammar".
+ (reduce_xml): Rename output XML element "useless" to
+ "useless-in-grammar".
+ (reduce_print): Don't report the count of grammatically useless rules
+ as "rules never reduced" just because %yacc is specified.
+ In the correct report of this count, say nonterminal(s) and rule(s)
+ "useless in grammar".
+ * tests/conflicts.at (S/R in initial): Update expected output.
+ (Defaulted Conflicted Reduction): Likewise.
+ (Unreachable States After Conflict Resolution): Likewise.
+ * tests/existing.at (GNU pic Grammar): Likewise.
+ * tests/reduce.at (Useless Nonterminals): Likewise.
+ (Useless Rules): Likewise.
+ (Reduced Automaton): Likewise.
+ (Underivable Rules): Likewise.
+ (Empty Language): Likewise.
+
+2007-11-09 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * data/bison.m4 (b4_cat): Put a newline after the end delimiter of the
+ here document and before the EOF so that BSD's implementation of Bourne
+ shell doesn't parse the delimiter as part of the here document.
+ * doc/.cvsignore: Add cross-options.texi.
+ * src/getargs.c (usage): Add a blank line after the warning categories.
+
+2007-11-08 Paolo Bonzini <bonzini@gnu.org>
+
+ * data/lalr1.java (Lexer): Remove usage of b4_pure_if.
+
+2007-11-05 Akim Demaille <akim@epita.fr>
+
+ Remove Id: from bison.1.
+ * doc/Makefile.am (remove_time_stamp): Include the sed invocation.
+ (perl -0777 -pi -e 's/\.PP\nId): New.
+ (.x.1): Use it to ignore the version control revision.
+
+2007-11-05 Akim Demaille <demaille@gostai.com>
+
+ * build-aux/Makefile.am: Ship cross-options.pl.
+ * doc/Makefile.am: Always refer to cross-options.texi with
+ $(srcdir).
+ (MAINTAINERCLEANFILES): Add it.
+
+2007-11-04 Akim Demaille <demaille@gostai.com>
+
+ Generate the long/short option cross-table.
+ * build-aux/cross-options.pl: New.
+ * doc/Makefile.am (cross-options.texi): New.
+ * doc/bison.texinfo: Use it.
+
+2007-11-04 Akim Demaille <demaille@gostai.com>
+
+ Generate bison.1 using help2man.
+ * doc/common.x, doc/bison.x: New.
+ * doc/Makefile.am (bison.1, .x.1): New.
+ The code is taken from autoconf-2.61/man/Makefile.am.
+ * configure.ac: Look for help2man.
+
+2007-11-04 Akim Demaille <demaille@gostai.com>
+
+ Complete --help.
+ * src/getargs.c (usage): Document -W, make it clear that -d,
+ -g and -x have optional arguments.
+
+2007-11-04 Akim Demaille <demaille@gostai.com>
+
+ Find sha1sum when named gsha1sum.
+ * bootstrap (find_tool): New.
+ ($SHA1SUM): New.
+
+2007-10-28 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Deprecate %pure-parser and add `%define api.pure'. Discussed starting
+ at
+ <http://lists.gnu.org/archive/html/bison-patches/2007-09/msg00006.html>.
+ * NEWS (2.3a+): Mention.
+ * data/bison.m4 (b4_pure_if): Don't define it here.
+ * data/c.m4 (b4_identification): Depend on individual skeletons to
+ define b4_pure_flag, b4_push_flag, or b4_pull_flag if they use the
+ values of the %define variables api.pure or api.push_pull. Define
+ YYPURE, YYPUSH, and YYPULL accordingly.
+ * data/glr.c: Define b4_pure_if based on `%define api.pure' unless
+ glr.cc has already defined b4_pure_flag.
+ * data/push.c: Define b4_pure_if based on `%define api.pure'.
+ Remove YYPUSH and YYPULL since they're back in b4_identification again.
+ * data/yacc.c: Define b4_pure_if based on `%define api.pure'.
+ * doc/bison.texinfo (Pure Decl): Update.
+ (Push Decl): Update.
+ (Decl Summary): Add api.pure to %define entry.
+ In %pure-parser entry, say it's deprecated and reference %define.
+ (Pure Calling): Update.
+ (Error Reporting): Update.
+ (C++ Scanner Interface): Update.
+ (How Can I Reset the Parser): Update.
+ (Table of Symbols): In %pure-parser entry, say it's deprecated and
+ reference %define.
+ * src/getargs.c (pure_parser): Remove global variable.
+ * src/getargs.h (pure_parser): Remove extern.
+ * src/output.c (prepare): Don't define pure_flag muscle.
+ * src/parse-gram.y (prologue_declaration): Implement %pure-parser as a
+ wrapper around `%define api.pure'.
+ * tests/calc.at (Simple LALR Calculator): Update.
+ (Simple GLR Calculator): Update.
+ * tests/cxx-type.at (GLR: Resolve ambiguity, pure, no locations):
+ Update.
+ (GLR: Resolve ambiguity, pure, locations): Update.
+ (GLR: Merge conflicting parses, pure, no locations): Update.
+ (GLR: Merge conflicting parses, pure, locations): Update.
+ * tests/glr-regression.at (Uninitialized location when reporting
+ ambiguity): Update
+ * tests/input.at (Unused %define api.pure): New test case.
+ * tests/local.at (_AT_BISON_OPTION_PUSHDEFS): Update definition for
+ AT_PURE_IF and AT_PURE_AND_LOC_IF.
+ * tests/push.at (Push Parsing: Memory Leak for Early Deletion): Update.
+
+2007-10-28 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ %define push_pull -> %define api.push_pull. Discussed starting at
+ <http://lists.gnu.org/archive/html/bison-patches/2007-09/msg00005.html>.
+ * data/push.c: Expect the new name.
+ * data/yacc.c: Likewise.
+ * doc/bison.texinfo (Push Decl): Update.
+ (Decl Summary): Update %define entry.
+ (Push Parser Function): Update.
+ (Pull Parser Function): Update.
+ (Parser Create Function): Update.
+ (Parser Delete Function): Update.
+ * tests/calc.at (Simple LALR Calculator): Update.
+ * tests/input.at (%define enum variables): Update.
+ * tests/push.at (Push Parsing: Memory Leak for Early Deletion): Update.
+ (Push Parsing: Multiple impure instances): Update.
+ (Push Parsing: Unsupported Skeletons): Update.
+ * tests/torture.at (Exploding the Stack Size with Alloca): Update.
+ (Exploding the Stack Size with Malloc): Update.
+
+ * NEWS (2.3a+): Add an entry for the push parser, and clean up the
+ other entries some.
+
+2007-10-27 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ For the XML output's terminal element, rename @number to @token-number,
+ and add @symbol-number. In the nonterminal element, rename @number to
+ @symbol-number. Discussed starting at
+ <http://lists.gnu.org/archive/html/bison-patches/2007-10/msg00040.html>.
+ * data/xslt/xml2text.xsl (xsl:template match="terminal"): Update for
+ renames.
+ (xsl:template match="nonterminal"): Likewise.
+ * data/xslt/xml2xhtml.xsl (xsl:template match="terminal"): Likewise.
+ (xsl:template match="nonterminal"): Likewise.
+ * src/print-xml.c (print_grammar): Implement.
+
+2007-10-21 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * data/xslt/xml2dot.xsl (xsl:template match="automaton/state"): After
+ 2007-10-11 change, the child elements here are items not rules.
+ (xsl:template match="item"): New.
+ (xsl:template match="rule"): Update for new reduced itemset.
+ (xsl:template match="point"): Remove.
+ (xsl:template match="empty"): For consistency with --graph, don't
+ output "/* empty */".
+ * data/xslt/xml2text.xsl (xsl:template match="terminal"): When invoking
+ line-wrap, don't pass a negative value as first-line-length since this
+ won't work with the following changes.
+ (xsl:template name="line-wrap"): Simplify slightly.
+ (xsl:template name="ws-search"): Eliminate recursion.
+ * src/print_graph.c (print_core): Don't print a reduction's lookahead
+ set next to an item whose dot is not at the end of the RHS even if it
+ happens to be associated with the same rule.
+
+2007-10-19 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Add %define lr.keep_unreachable_states.
+ * NEWS (2.3a+): Mention it in the entry for unreachable state removal.
+ * doc/bison.texinfo (Decl Summary): Mention it in the %define entry.
+ * src/main.c (main): Implement it.
+ * tests/conflicts.at (Unreachable States After Conflict Resolution):
+ Extend to test it, and fix a typo.
+
+2007-10-19 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * NEWS (2.3a+): Add entry for recent .output file lookahead set fix.
+ * doc/bison.texinfo (Understanding): Remove a bogus lookahead set in
+ the example .output text.
+ * tests/regression.at (Extra lookahead sets in report): Improve wording
+ of comments.
+
+2007-10-17 Wojciech Polak <polak@gnu.org>
+
+ * src/print-xml.c (print_grammar): Renamed
+ <terminal> and <nonterminal> attributes:
+ "type" to "number" and "symbol" to "name".
+ * data/xslt/xml2text.xsl (xsl:template match="terminal"):
+ Use new attribute names.
+ (xsl:template match="nonterminal"): Likewise.
+ * data/xslt/xml2xhtml.xsl: Likewise.
+
+2007-10-17 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * doc/bison.texinfo (Bison Options): Add entry for --print-datadir.
+ (Option Cross Key): Likewise.
+
+ * src/print-xml.c (print_core): Don't print a reduction's lookahead set
+ next to an item whose dot is not at the end of the RHS even if it
+ happens to be associated with the same rule.
+ * src/print.c (print_core): Likewise.
+ * tests/conflicts.at (Unresolved SR Conflicts): Update output.
+ (Resolved SR Conflicts): Update output.
+ * tests/regression.at (Extra lookahead sets in report): New test case.
+
+2007-10-11 Wojciech Polak <polak@gnu.org>
+
+ * src/print-xml.c (print_core): Remove item set
+ redundancy.
+ * data/xslt/bison.xsl (bison:ruleNumber): New key.
+ Improve processing time. Suggested by Joel E. Denny.
+ * data/xslt/xml2dot.xsl (xsl:template name="escape"):
+ Write xsl:param "required" attribute as comment.
+ * data/xslt/xml2text.xsl (xsl:template match="item"): New.
+ (xsl:template match="rule"): Support new reduced itemset.
+ (xsl:template match="point"): Remove.
+ * data/xslt/xml2xhtml.xsl: Likewise.
+
+2007-10-09 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * src/getargs.c (version): Update copyright year.
+
+2007-10-09 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Make xml2dot.xsl and --graph produce the same output.
+ * data/xslt/xml2dot.xsl (xsl:template match="rule"): Use a ` '
+ instead of a `\n'. That is, don't add escapes yet or they'll be doubly
+ escaped later.
+ (xsl:template name="output-node"): Use the new escape template instead
+ of the string-replace template directly.
+ (xsl:template name="output-edge"): Likewise.
+ (xsl:template name="escape"): New, escapes backslashes and newlines in
+ addition to quotation marks.
+ * src/graphviz.c (start_graph, output_node, output_edge): Add
+ whitespace to output for legibility.
+
+ Make xml2text.xsl and --report produce the same output, and remove the
+ XML "conflicts" element since a conflict summary is easily extracted
+ from the automaton.
+ * data/xslt/bison.xsl: New.
+ (xsl:template match="state" mode="bison:count-conflicts): New.
+ * data/xslt/xml2text.xsl: Import bison.xsl.
+ (xsl:template match="bison-xml-report"): Instead of styling the
+ "conflicts" element, style the "automaton" element with mode
+ "conflicts". Unlike the former, the latter lists S/R and R/R
+ conflicts for a state on the same line.
+ (xsl:template match="conflicts"): Remove.
+ (xsl:template match="conflict"): Remove.
+ (xsl:template match="terminal"): Line-wrap the list of rules in which
+ the terminal is used.
+ (xsl:template match="nonterminal"): Likewise for nonterminals.
+ (xsl:template match="automaton" mode="conflicts"): New.
+ (xsl:template match="state" mode="conflicts"): New.
+ (xsl:template name="line-wrap"): New.
+ (xsl:template name="ws-search"): New.
+ * data/xslt/xml2xhtml.xsl: Import bison.xsl.
+ (xsl:template match="bison-xml-report"): Instead of styling the
+ "conflicts" element, style the "automaton" element with mode
+ "conflicts."
+ (xsl:template match="conflicts"): Remove.
+ (xsl:template match="conflict"): Remove.
+ (xsl:template match="automaton" mode="conflicts"): New.
+ (xsl:template match="state" mode="conflicts): New.
+ * src/conflicts.c (conflicts_output_xml): Remove.
+ * src/conflicts.h (conflicts_output_xml): Remove prototype.
+ * src/print-xml.c (print_xml): Don't invoke conflicts_output_xml.
+ * src/print.c (print_grammar): Consistently wrap at the 66th column so
+ the corresponding XSLT is easier. Also, never wrap between a word and
+ the comma that follows it.
+
+2007-10-08 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Improve C++ namespace support. Discussed starting at
+ <http://lists.gnu.org/archive/html/help-bison/2007-09/msg00016.html>.
+ * data/c++.m4: (b4_namespace_ref, b4_namespace_open,
+ b4_namespace_close): New macros that interpret the %define variable
+ "namespace" so its value can contain "::" to indicate nested
+ namespaces.
+ * data/glr.cc (b4_namespace): Don't define, and replace all uses with
+ the above macros.
+ * data/lalr1.cc (b4_namespace): Likewise.
+ * data/location.cc (b4_namespace): Likewise.
+ * doc/bison.texinfo (Decl Summary): Move `%define push_pull' entry
+ inside a new table in the general %define entry. Document `%define
+ namespace' there as well. Point the %name-prefix entry to it since it
+ explains it more completely in the case of C++.
+ (C++ Bison Interface): Mention `%define namespace' instead of
+ %name-prefix.
+ (Table of Symbols): Remove the `%define push_pull' entry. The %define
+ entry suffices.
+ * tests/c++.at (Relative namespace references): New test case.
+ (Absolute namespace references): New test case.
+ (Syntactically invalid namespace references): New test case.
+ * tests/input.at (C++ namespace reference errors): New test case.
+
+2007-10-08 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Add syncline support and location accessor to internal %define
+ interfaces.
+ * data/bison.m4 (b4_percent_define_get_loc): New.
+ (b4_percent_define_get_syncline): New.
+ (b4_percent_define_flag_if): Use b4_percent_define_get_loc.
+ (b4_percent_define_default): Record defining location as line 1 rather
+ than 0 for the sake of synchronizing #line's, and define
+ b4_percent_define_syncline(VARIABLE).
+ (b4_percent_define_check_values): Use b4_percent_define_get_loc.
+ * src/muscle_tab.c (muscle_syncline_grow): New.
+ (muscle_code_grow): Use muscle_syncline_grow.
+ (muscle_percent_define_insert): Use muscle_percent_define_get_loc, and
+ define b4_percent_define_syncline(VARIABLE).
+ (muscle_percent_define_get_loc): New.
+ (muscle_percent_define_get_syncline): New.
+ (muscle_percent_define_flag_if): Use muscle_percent_define_get_loc, and
+ remove some unused variables.
+ (muscle_percent_define_default): Record defining location as line 1
+ rather than 0 for the sake of synchronizing #line's, and define
+ b4_percent_define_syncline(VARIABLE).
+ (muscle_percent_define_check_values): Use
+ muscle_percent_define_get_loc.
+ * src/muscle_tab.h (muscle_percent_define_get_loc): Prototype.
+ (muscle_percent_define_get_syncline): Prototype.
+ * tests/skeletons.at (%define Boolean variables: invalid skeleton
+ defaults): Update output for location change.
+ (Complaining during macro argument expansion): Extend to test
+ b4_percent_define_get_loc and b4_percent_define_get_syncline errors.
+
+2007-10-07 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Fix some error-reporting macro bugs.
+ * data/bison.m4 (b4_cat): New.
+ (b4_error, b4_error_at): Use b4_cat to send error directives directly
+ to stdout so they don't become arguments to other macros. Update
+ comments and add examples.
+ (b4_warn, b4_warn_at, b4_complain, b4_complain_at): Update comments and
+ add examples.
+ (b4_fatal, b4_fatal_at): Likewise, and invoke m4_exit(1) immediately
+ after printing the error directive so that M4 doesn't report subsequent
+ problems that are induced by this problem.
+ * src/scan-skel.l: Recognize @` digraph outside of directive arguments
+ instead of just in them. Recognize @\n in both places. Both expand to
+ the empty string. Needed by b4_cat.
+ * tests/skeletons.at (Complaining during macro argument expansion):
+ New test case.
+ (Fatal errors make M4 exit immediately): New test case.
+
+2007-10-04 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Implement --print-datadir.
+ * src/getargs.c (usage): Mention.
+ (PRINT_DATADIR_OPTION): New anonymous enum member.
+ (long_options): Add entry for it.
+ (getargs): Add case for it calling compute_pkgdatadir.
+ * src/output.c (output_skeleton): Encapsulate data directory
+ computation from here...
+ (prepare): ... and from here...
+ (compute_pkgdatadir): ... into this new function.
+ * src/output.h (compute_pkgdatadir): Prototype.
+
+2007-09-29 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * src/print-xml.c (escape_bufs): New static global variable
+ replacing...
+ (xml_escape_n): ... the static local variable buf here.
+ (print_xml): Free memory for escape_bufs.
+ * src/reduce.c (reduce_xml): XML-escape terminal symbol tags.
+
+2007-09-25 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Replace `%push-parser' and `%push-pull-parser' with
+ `%define push_pull "push"' and `%define push_pull "both"'.
+ `%define push_pull "pull"' is the default.
+ * doc/bison.texinfo (Push Decl, Push Parser Function,
+ Pull Parser Function, Parser Create Function, Parser Delete Function):
+ Update declarations.
+ (Decl Summary, Table of Symbols): Replace %push-parser and
+ %push-pull-parser entries with a %define push_pull entry.
+ * data/bison.m4 (b4_percent_define_check_values): New macro.
+ (b4_pull_if, b4_push_if, b4_use_push_for_pull_if): Move these
+ definitions...
+ * data/c.m4 (b4_identification): ... and the YYPUSH and YYPULL cpp
+ definitions...
+ * data/push.c: ... to here and compute them from the value of the
+ %define variable push_pull.
+ * data/c-skel.m4: Instead of choosing the push.c skeleton for push
+ parsing requests here...
+ * data/yacc.c: ... hack this to switch to push.c any time
+ b4_use_push_pull_flag or the %define variable push_pull is set. This
+ will go away when we mv push.c yacc.c.
+ * data/c++-skel.m4, data/glr.c, data/java-skel.m4: Don't report that
+ push parsing is not supported since unused %define variables are
+ reported anyway.
+ * src/getargs.c, src/getargs.h (pull_parser, push_parser): Remove.
+ * src/muscle_tab.h (muscle_percent_define_check_values): Update
+ comments for consistency with b4_percent_define_check_values.
+ * src/output.c (prepare): Don't insert b4_pull_flag and b4_push_flag
+ muscles.
+ * src/parse-gram.y (PERCENT_PUSH_PARSER, PERCENT_PUSH_PULL_PARSER):
+ Remove.
+ (prologue_declaration): Remove %push-parser and %push-pull-parser
+ rules.
+ * src/scan-gram.l (%push-parser, %push-pull-parser): Remove rules.
+ * tests/calc.at: Update declarations.
+ * tests/input.at (%define enum variables): New test case.
+ * tests/push.at (Push Parsing: Memory Leak for Early Deletion): Update
+ declaration.
+ (Push Parsing: Multiple impure instances): Update declaration.
+ (Push Parsing: Unsupported Skeletons): New test case.
+ * tests/torture.at (Exploding the Stack Size with Alloca): Update
+ declaration.
+ (Exploding the Stack Size with Malloc): Update declaration.
+
+2007-09-24 Wojciech Polak <polak@gnu.org>
+
+ Add XSLT transformations.
+
+ * data/xslt/xml2dot.xsl: Transform XML into DOT.
+ * data/xslt/xml2text.xsl: Transform XML into plain text.
+ * data/xslt/xml2xhtml.xsl: Transform XML into XHTML.
+ * data/Makefile.am (xsltdir): New variable.
+ (dist_xslt_DATA): Add xslt/*.xsl files.
+
+2007-09-23 Paul Eggert <eggert@cs.ucla.edu>
+
+ * src/conflicts.c (log_resolution): Fix indenting bugs I introduced.
+ Problem reported by Wojciech Polak.
+ * src/print-xml.c (xml_puts): Work even if LEVEL exceeds INT_MAX/2.
+ (xml_printf): Undo change I made on 21 September; that is,
+ indent 2 spaces, not 1.
+
+2007-09-23 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Pacify ./configure --enable-gcc-warnings.
+ * src/print-xml.c, src/print-xml.h (xml_puts): Make third argument
+ `char const *' instead of `char *'.
+ * src/state.c (state_rule_lookahead_tokens_print_xml): Remove unused
+ local variable `sep'.
+
+2007-09-21 Paul Eggert <eggert@cs.ucla.edu>
+
+ * src/gram.c (rule_rhs_print_xml): Now static, since it isn't used
+ elsewhere.
+ * src/print-xml.c: Prefer "const" after types; that's more consistent.
+ (xml_printf): Indent just 1 space for level.
+ (e_char, xlate_char): Remove.
+ (xml_escape_string): Rewrite to avoid undefined behavior (used
+ storage that was freed from the stack).
+ (xml_escape_n): Don't bother checking for subscript error.
+
+2007-09-21 Wojciech Polak <polak@gnu.org>
+
+ Add Bison XML Automaton Report.
+
+ Add support for an -x option to generate an XML report.
+ It is not documented yet.
+ * src/print-xml.c: New file.
+ * src/print-xml.h: Likewise.
+ * lib/timevar.def (TV_XML): New var.
+ * src/Makefile.am (bison_SOURCES): Add print-xml.c, print-xml.h.
+ * src/conflicts.c: Include print-xml.h.
+ (solved_conflicts_xml_obstack): New var.
+ (log_resolution, conflicts_solve, conflicts_free):
+ Add support for XML report.
+ (conflicts_output_val): New function.
+ * src/conflicts.h (conflicts_output_val): New decl.
+ * src/files.c (spec_xml_file): New var.
+ (compute_output_file_names, output_file_names_free): Add XML support.
+ * src/files.h (spec_xml_file): New decl.
+ * src/getargs.c (xml_flag): New var.
+ (usage, short_options, long_options, getargs): Add XML support.
+ * src/getargs.h (xml_flag): New decl.
+ * src/gram.c: Include print-xml.h.
+ (rule_lhs_print_xml, rule_rhs_print_xml):
+ (grammar_rules_partial_print_xml, grammar_rules_print_xml):
+ New functions.
+ * src/gram.h: Declare external ones.
+ * src/main.c: Include print-xml.h.
+ (main): Add XML support.
+ * src/reduce.c: Include print-xml.h.
+ (reduce_xml): New function.
+ * src/reduce.h: Declare it.
+ * src/state.c: Include print-xml.h.
+ (state_new): Add XML support.
+ (state_rule_lookahead_tokens_print_xml): New function.
+ * src/state.h: Declare it.
+ (struct state): New member solved_conflicts_xml.
+ * src/symtab.c (symbol_class_get_string): New function.
+ * src/symtab.h: Declare it.
+
+2007-09-21 Paul Eggert <eggert@cs.ucla.edu>
+
+ * GNUmakefile: Switch to coreutils's version.
+ * bootstrap: Likewise.
+ * Makefile.cfg: Adjust to new GNUmakefile.
+ * README-hacking: Likewise.
+
+ Import from gnulib:
+
+ 2006-08-18 Paul Eggert <eggert@cs.ucla.edu>
+ Bruno Haible <bruno@clisp.org>
+
+ * m4/bison-i18n.m4 (BISON_I18N): Also handle the case where yacc exists
+ and is a script that invokes bison. Tighten the code. Add comments.
+
+2007-08-28 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Spell "boolean" as "Boolean". Reported by Akim Demaille.
+ * data/bison.m4 (b4_percent_define_flag_if): Fix complaint.
+ * doc/bison.texinfo (Decl Summary): Fix.
+ * src/muscle_tab.c (muscle_percent_define_flag_if): Fix complaint.
+ * tests/input.at (Boolean %define variables): Update output.
+ * tests/skeletons.at (%define boolean variables: invalid skeleton
+ defaults): Rename to...
+ (%define Boolean variables: invalid skeleton defaults): ... this and
+ update output.
+
+2007-08-17 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ In impure push mode, don't allow more than one yypstate to be allocated
+ since multiple impure parsers would corrupt yynerrs.
+ * data/push.c (yypstate_allocated): New static global variable
+ initialized to 0.
+ (yypull_parse): If yypstate_new returns 0, don't report it as memory
+ exhaustion if yypstate_allocated is 1, but still return 2.
+ (yypstate_new): Invoke yyerror and return 0 if yypstate_allocated is
+ already 1. Otherwise, set it to 1.
+ (yypstate_delete): Set it to 0.
+ * tests/push.at (Push Parsing: Multiple impure instances): New test
+ case.
+
+2007-08-17 Bob Rossi <bob@brasko.net>
+
+ * doc/bison.texinfo (Push Decl): Document the push parser.
+ (Table of Symbols): Ditto.
+ (Pure Decl): Ditto.
+ (Decl Summary): Ditto.
+ (Multiple Parsers, Push Parser Function, Pull Parser Function,
+ Parser Create Function, Parser Delete Function):
+ Add new push parser symbols.
+ (Table of Symbols): Document push-parser, push-pull-parser,
+ yypush_parse, yypull_parse, yypstate_new and yypstate_delete.
+
+2007-08-15 Paul Eggert <eggert@cs.ucla.edu>
+
+ Update to GPLv3.
+ * doc/gpl-3.0.texi: New file.
+ * doc/gpl.texi: Remove.
+ * COPYING, GNUmakefile, HACKING, Makefile.am, Makefile.cfg:
+ * Makefile.maint, NEWS, PACKAGING, README, README-alpha:
+ * README-hacking, TODO, bootstrap, bootstrap.conf:
+ * configure.ac, data/Makefile.am, data/README, data/bison.m4:
+ * data/c++-skel.m4, data/c++.m4, data/c-skel.m4, data/c.m4:
+ * data/glr.c, data/glr.cc, data/java-skel.m4, data/java.m4:
+ * data/lalr1.cc, data/lalr1.java, data/location.cc:
+ * data/push.c, data/yacc.c, data/m4sugar/m4sugar.m4:
+ * djgpp/Makefile.maint, djgpp/README.in, djgpp/config.bat:
+ * djgpp/config.sed, djgpp/config.site, djgpp/config_h.sed:
+ * djgpp/djunpack.bat, djgpp/subpipe.c, djgpp/subpipe.h:
+ * djgpp/testsuite.sed, doc/Makefile.am, doc/bison.texinfo:
+ * doc/fdl.texi, doc/refcard.tex, etc/Makefile.am, etc/README:
+ * etc/bench.pl.in, examples/Makefile.am, examples/extexi:
+ * examples/calc++/Makefile.am, lib/Makefile.am, lib/abitset.c:
+ * lib/abitset.h, lib/bbitset.h, lib/bitset.c, lib/bitset.h:
+ * lib/bitset_stats.c, lib/bitset_stats.h, lib/bitsetv-print.c:
+ * lib/bitsetv-print.h, lib/bitsetv.c, lib/bitsetv.h:
+ * lib/ebitset.c, lib/ebitset.h, lib/get-errno.c:
+ * lib/get-errno.h, lib/lbitset.c, lib/lbitset.h:
+ * lib/libiberty.h, lib/main.c, lib/subpipe.c, lib/subpipe.h:
+ * lib/timevar.c, lib/timevar.def, lib/timevar.h:
+ * lib/vbitset.c, lib/vbitset.h, lib/yyerror.c:
+ * m4/c-working.m4, m4/cxx.m4, m4/m4.m4, m4/subpipe.m4:
+ * m4/timevar.m4, src/LR0.c, src/LR0.h, src/Makefile.am:
+ * src/assoc.c, src/assoc.h, src/closure.c, src/closure.h:
+ * src/complain.c, src/complain.h, src/conflicts.c:
+ * src/conflicts.h, src/derives.c, src/derives.h, src/files.c:
+ * src/files.h, src/flex-scanner.h, src/getargs.c:
+ * src/getargs.h, src/gram.c, src/gram.h, src/graphviz.c:
+ * src/lalr.c, src/lalr.h, src/location.c, src/location.h:
+ * src/main.c, src/muscle_tab.c, src/muscle_tab.h:
+ * src/nullable.c, src/nullable.h, src/output.c, src/output.h:
+ * src/parse-gram.c, src/parse-gram.h, src/parse-gram.y:
+ * src/print.c, src/print.h, src/print_graph.c:
+ * src/print_graph.h, src/reader.c, src/reader.h, src/reduce.c:
+ * src/reduce.h, src/relation.c, src/relation.h:
+ * src/revision.h, src/scan-code.h, src/scan-code.l:
+ * src/scan-gram.h, src/scan-gram.l, src/scan-skel.h:
+ * src/scan-skel.l, src/state.c, src/state.h, src/symlist.c:
+ * src/symlist.h, src/symtab.c, src/symtab.h, src/system.h:
+ * src/tables.c, src/tables.h, src/uniqstr.c, src/uniqstr.h:
+ * tests/Makefile.am, tests/actions.at, tests/c++.at:
+ * tests/calc.at, tests/conflicts.at, tests/cxx-type.at:
+ * tests/existing.at, tests/glr-regression.at:
+ * tests/headers.at, tests/input.at, tests/java.at:
+ * tests/local.at, tests/output.at, tests/push.at:
+ * tests/reduce.at, tests/regression.at, tests/sets.at:
+ * tests/skeletons.at, tests/synclines.at, tests/testsuite.at:
+ * tests/torture.at:
+ Update to GPLv3.
+
+2007-08-11 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Get rid of broken %no-parser, -n, and --no-parser implementation and
+ documentation.
+ * TODO: Don't mention them.
+ * doc/bison.1: Likewise.
+ * doc/bison.texinfo (Decl Summary): Likewise.
+ (Bison Options): Likewise.
+ (Option Cross Key): Likewise.
+ * src/getargs.c (no_parser_flag): Remove global variable.
+ (usage): Don't print description of -n and --no-parser.
+ (long_options): Remove --no-parser entry here.
+ (getargs): Remove -n case in the switch here.
+ * src/getargs.h (no_parser_flag): Remove extern.
+ * tests/regression.at (Web2c Actions): Remove comment that mentions
+ --no-parser.
+
+2007-08-11 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * tests/push.at (Push Parsing: Memory Leak for Early Deletion): Do not
+ name user variables starting with `yy'. Just pass NULL instead of a
+ dummy local &yylval to yypush_parse.
+ * tests/torture.at (AT_DATA_STACK_TORTURE): Do not name user variables
+ starting with `yy'.
+
+2007-08-03 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * data/yacc.c (yyexhaustedlab): Define it when YYERROR_VERBOSE is
+ true since it's then always used regardless of whether yyoverflow is
+ defined. Reported by Christian Burger at
+ <http://lists.gnu.org/archive/html/bug-bison/2007-07/msg00031.html>.
+ * THANKS: Add Christian Burger.
+
+ * ChangeLog: For changes in doc/bison.texinfo, consistently reference
+ node names: say "Decl Summary" not "Bison Declaration Summary".
+
+2007-07-28 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * src/muscle_tab.c (muscle_percent_define_flag_if): In order to
+ determine whether this function has already complained about an invalid
+ value for a %define boolean variable, don't check whether Bison has
+ ever examined the value. As written, the check was a tautology.
+ Instead, record and check for this complaint using a separate muscle.
+
+2007-07-27 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Fix push parsing memory leak reported by Brandon Lucia at
+ <http://lists.gnu.org/archive/html/bug-bison/2007-07/msg00032.html>.
+ * THANKS: Add Brandon Lucia.
+ * data/push.c (yypstate_delete): Free the stack if it was reallocated
+ but the parse never completed and thus freed it.
+ * tests/Makefile.am (TESTSUITE_AT): Add push.at.
+ * tests/testsuite.at: Include push.at.
+ * test/push.at: New.
+ (Push Parsing: Memory Leak for Early Deletion): New test case.
+
+2007-07-17 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Improve handling of multiple S/R conflicts in the same state and of S/R
+ conflicts involving multiple reductions.
+ * src/conflicts.c (resolve_sr_conflict): Don't assign the error action
+ set for a state here or Bison will abort if it is reassigned on a
+ later conflicted reduction in the same state.
+ Similarly, don't finalize and assign the solved conflicts report here
+ or it will be lost if it is reassigned on a later conflicted reduction
+ in the same state.
+ (set_conflicts): Instead, assign them both here after all S/R conflicts
+ in the state have been fully examined.
+ * src/print.c (shift_set): Rename to...
+ (no_reduce_set): ... this.
+ (print_reductions): Update for rename, and add %nonassoc error action
+ tokens to no_reduce_set so that, when printing the first remaining
+ reduction on an error action token, the reduction is enclosed in
+ brackets.
+ (print_results): Update for rename.
+ * tests/conflicts.at (Solved conflicts report for multiple reductions
+ in a state): New test case.
+ (%nonassoc error actions for multiple reductions in a state): New test
+ case.
+
+ * src/main.c (main): Don't depend on C99 features.
+
+2007-07-16 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * build-aux/.cvsignore: Add compile.
+ * lib/.cvsignore: Add charset.alias, ref-add.sed, ref-del.sed, and
+ uniwidth.
+
+2007-07-10 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * bootstrap (slurp): Create target directories that don't exist.
+ Specifically, we need lib/uniwidth/ because of recent Gnulib changes.
+
+2007-07-09 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * LR0.c (new_itemsets): Fix wording in comments: say item index rather
+ than item number.
+ * closure.c (closure): Likewise.
+ * state.h (reductions): Comment sorting of rules.
+ (state): Comment sorting of items.
+
+2007-07-02 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Fix C++ test cases after recent Gnulib changes. Discussed starting at
+ <http://lists.gnu.org/archive/html/bug-bison/2007-07/msg00000.html>.
+ * examples/calc++/Makefile.am (DEFAULT_INCLUDES): Override Automake's
+ definition in order to avoid Gnulib headers since we don't use config.h
+ here.
+ * tests/output.at (AT_CHECK_OUTPUT_FILE_NAME): Use AT_DATA_GRAMMAR
+ rather than AT_DATA so that config.h is included.
+
+2007-07-01 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * data/glr.c (yy_yypstack, yypstates, yypdumpstack): Use YYFPRINTF
+ instead of fprintf. Guard these functions with #if YYDEBUG instead of
+ #ifdef YYDEBUG for consistency with all other uses of YYDEBUG in Bison
+ and so that YYFPRINTF is guaranteed to be defined here.
+
+2007-05-29 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * src/muscle_tab.c (muscle_percent_define_invalid_value): Replace
+ with...
+ (muscle_percent_define_check_values): ... this more helpful function.
+ Again, it's not used yet, but it will be.
+ * src/muscle_tab.h: Likewise.
+
+ Improve some comments in parser table construction.
+ * src/LR0.c (new_itemsets): Explain sorting of itemset and kernel_base.
+ (generate_states): Don't mention ruleset, which is internal to closure.
+ * src/closure.c (closure): Explain sorting of core and itemset, which
+ is required for this function to behave correctly.
+ * src/closure.h (closure): Mention sorting.
+
+2007-05-28 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * src/lalr.c (state_lookahead_tokens_count): For code readability,
+ move the check for disabled transitions to an aver since conflict
+ resolution hasn't happened yet.
+
+ * src/lalr.c (state_lookahead_tokens_count): Remove the check that
+ labels a state as inconsistent just because it has error transitions.
+ The original form of this check appeared in revision 1.1 of lalr.c,
+ which was committed on 1991-12-21. Now (at least), changing the
+ consistency label on such a state appears to have no useful effect in
+ any of the places it is examined, which I enumerate below. The key
+ point to understanding each item in this enumeration is that a state
+ with an error transition is labelled consistent in the first place only
+ if it has no rules, so the check cannot matter for states that have
+ rules. (1) Labelling a state as inconsistent will cause set_conflicts
+ to try to identify its conflicts, and a state must have *rules* to have
+ conflicts. (2) Labelling a state as inconsistent will affect how
+ action_row sets the default *rule* for the state. (3) Labelling a
+ state as inconsistent will cause build_relations to add lookback edges
+ to *rules* in that state.
+ * src/state.h (struct state): Word the comment for member consistent
+ more carefully.
+
+2007-05-27 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Don't depend on C99 features.
+ * src/conflicts.c (conflicts_update_state_numbers): Fix for-loop.
+ * src/lalr.c (lalr_update_state_numbers): Fix for-loop.
+ * src/reader.c (check_and_convert_grammar): Fix for-loop.
+ * src/state.c (state_mark_reachable_states): Fix for-loop.
+ (state_remove_unreachable_states): Fix for-loop.
+
+ Don't widen struct state with member reachable just to temporarily
+ record reachability. Instead, use a local bitset.
+ * src/state.h (struct state): Remove member.
+ * src/state.c (state_new): Don't initialize it.
+ (state_mark_reachable_states): Rename to...
+ (state_record_reachable_states): ... this, and use bitset.
+ (state_remove_unreachable_states): Use bitset.
+
+2007-05-26 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * src/Makefile.am (yacc): Quote target action commands properly so
+ that the yacc script isn't corrupt. Reported by Hans Aberg at
+ <http://lists.gnu.org/archive/html/bug-bison/2007-05/msg00003.html>.
+
+ * data/glr.c (yylval): As in yacc.c, don't extern in the header for
+ the case of pure parsers. Reported by Frans Englich at
+ <http://lists.gnu.org/archive/html/help-bison/2007-05/msg00018.html>.
+ * THANKS: Add Frans Englich.
+
+ * NEWS (2.3a+): In the %code entry, reference section `Bison
+ Declaration Summary' from the manual now since the %code summary has
+ moved there.
+ * doc/bison.texinfo (Prologue Alternatives): Mention that directives
+ in the rules section must be terminated by semicolons.
+
+2007-05-20 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Extend the front-end API for %define variables to more completely
+ mirror the back-end. This will be useful in the future.
+ * data/bison.m4 (b4_percent_define_get, b4_percent_define_ifdef):
+ Update comments to mention the new front-end counterparts of these
+ macros.
+ * src/muscle_tab.c (MUSCLE_COMMON_DECODE): New macro with common code
+ for muscle_string_decode and muscle_location_decode.
+ (muscle_string_decode): New static function.
+ (muscle_location_decode): Use MUSCLE_COMMON_DECODE.
+ (muscle_percent_define_get, muscle_percent_define_ifdef): New
+ functions.
+ (muscle_percent_define_flag_if): Use muscle_percent_define_ifdef and
+ muscle_percent_define_get to mimic the b4_percent_define_flag_if
+ implementation more closely.
+ (muscle_percent_define_invalid_value): New function.
+ * src/muscle_tab.h (muscle_percent_define_get,
+ muscle_percent_define_ifdef, muscle_percent_define_invalid_value):
+ Prototype.
+
+2007-05-07 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * NEWS (2.3a+): Mention yesterday's state-removal change.
+ (2.3a): Remove the %language entry, which was added after 2.3a.
+ * src/LR0.c, src/closure.c, src/closure.h, src/conflicts.c,
+ src/conflicts.h, src/lalr.c, src/lalr.h, src/print.c,
+ src/print_graph.c, src/state.c, src/state.h, tests/conflicts.at,
+ tests/existing.at: Update copyright date.
+
+2007-05-06 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ If conflict resolution makes states unreachable, remove those states,
+ report rules that are then unused, and don't report conflicts in those
+ states.
+ * src/conflicts.c, src/conflicts.h (conflicts_update_state_numbers):
+ New global function.
+ * src/lalr.c, src/lalr.h (lalr_update_state_numbers): New global
+ function.
+ * src/main.c (main): After conflict resolution, remove the unreachable
+ states and update all data structures that reference states by number.
+ * src/state.c (state_new): Initialize each state's reachable member to
+ false.
+ (state_mark_reachable_states): New static function.
+ (state_remove_unreachable_states): New global function.
+ * src/state.h (struct state): Add member bool reachable.
+ (state_remove_unreachable_states): Prototype.
+ * tests/conflicts.at (Unreachable States After Conflict Resolution):
+ New test case.
+ * tests/existing.at (GNU pic Grammar): Update test case output now that
+ an unused rule is discovered.
+
+2007-05-06 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Minor code cleanup in parser table construction.
+ * src/LR0.c (new_itemsets): Use item_number_is_symbol_number.
+ (new_itemsets, save_reductions): Update for rename to nitemset.
+ * src/closure.c (nritemset): Rename to...
+ (nitemset): ... this since the "r" appears to meaningless and isn't
+ used in the comments.
+ (closure): Update for rename.
+ * src/closure.h (nritemset): Update extern to...
+ (nitemset): ... this.
+ * src/lalr.c (LA): Fix a typo in comments.
+ * src/print.c (print_core): Update for rename to nitemset.
+ * src/print_graph.c (print_graph): Likewise.
+ * src/state.h: Fix some typos in header comments.
+
+2007-04-04 Paul Eggert <eggert@cs.ucla.edu>
+
+ * THANKS: Use ASCII for Sebastien Fricker's name. Bison source
+ still sticks to ASCII. Sorry!
+
+ * README-hacking: New file, taken mostly from coreutils, with changes
+ for Bison. Contains much of the contents of:
+ * README-cvs: Remove.
+ * bootstrap: Sync from gnulib.
+ * build-aux/.cvsignore: Remove *.t, mkinstalldirs.
+ * lib/.cvsignore: Add wchar.h, wctype.h. Remove exit.h.
+
+2007-03-10 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * doc/bison.texinfo (Destructor Decl): Fix typo reported by Sebastian
+ Setzer.
+ (Java Differences): Fix some typos.
+ * THANKS: Add Sebastian Setzer.
+
+2007-03-07 Paolo Bonzini <bonzini@gnu.org>
+
+ * data/java.m4 (b4_single_class_if): Remove.
+ (b4_abstract_if): Look at "%define abstract".
+ (b4_lexer_if): New.
+ (b4_union_name): Rename...
+ (b4_yystype): ... to this. Map to "%define stype".
+ (b4_rhs_value, b4_parse_param_decl, b4_lex_param_decl,
+ b4_maybe_throws): Fix quoting.
+ (b4_lex_param_call): Move below to keep b4_*_param_decl close.
+ * data/lalr1.java (Lexer interface): Always define.
+ (Lexer interface within parser class): Remove.
+ (YYLexer class): New, used when "%code lexer" is present.
+ (constructor): When "%code lexer" is used, pass %lex-param
+ to the lexer constructor.
+ (yylex, yyparse): Remove %lex-param from method invocations
+ (YYStack, yyaction, yyparse): Rename b4_union_name to b4_yystype.
+
+ * doc/bison.texinfo (Java Bison Interface): Mention "%define
+ abstract". Rename "%define union_name" to "%define stype".
+ Rename method names according to previous patch.
+ (Java Scanner Interface): Describe "%code lexer" instead of
+ "%pure-parser" and "%define single_class".
+ (Java Differences): Mention "%code lexer".
+
+ * tests/java.at (_AT_DATA_JAVA_CALC_Y): Remove final argument.
+ Include scanner here, using macros from tests/local.at.
+ (AT_DATA_CALC_Y): Remove final argument.
+ (_AT_CHECK_JAVA_CALC): Likewise.
+ (AT_CHECK_JAVA_CALC): Likewise. Test all four combinations
+ of %locations and %error-verbose.
+ (main): Test with and without %lex-param.
+ * tests/local.at (_AT_BISON_OPTION_PUSHDEFS): Push AT_LEXPARAM_IF.
+ (AT_BISON_OPTION_POPDEFS): Pop it.
+
+2007-03-07 Juan Manuel Guerrero <juan.guerrero@gmx.de>
+
+ DJGPP spefic issue. Inhibit the use of disallowed characters for
+ file name genertion on Win98, WinXP, etc. These are |<>":?*\
+ and concern testsuite case 46.
+ * Makefile.am: djgpp/testsuite.sed added to EXTRA_DIST
+ * djgpp/testsuite.sed: Inhibit the use of disallowed characters.
+ * djgpp/config.bat: Inhibit the use of disallowed characters.
+
+2007-03-02 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Miscellaneous %define and %code cleanup.
+ * data/bison.m4 (b4_percent_define_flag_if): Correct comments on how
+ values are interpreted.
+ * doc/bison.texinfo (Decl Summary): Clean up and extend %define
+ documentation a little more.
+ * src/muscle_tab.c (MUSCLE_USER_NAME_CONVERT,
+ muscle_percent_define_insert, muscle_percent_code_grow): New
+ functions/macros.
+ * src/muscle_tab.h (muscle_percent_define_insert,
+ muscle_percent_code_grow): Prototype.
+ * src/parse-gram.y (prologue_declaration): Use
+ muscle_percent_define_insert and muscle_percent_code_grow when parsing
+ %define and %code directives.
+
+ Make it easy to share %define boolean variables between the front-end
+ and back-end. Though not used yet, this will be useful in the future.
+ * data/bison.m4 (b4_check_user_names): Rewrite comments to talk about
+ Bison uses of names rather than just skeleton uses of names.
+ (b4_percent_define_get, b4_percent_define_ifdef): Rename
+ b4_percent_define_skeleton_variables(VARIABLE) to
+ b4_percent_define_bison_variables(VARIABLE).
+ (b4_percent_code_get, b4_percent_code_ifdef): Rename
+ b4_percent_code_skeleton_qualifiers(QUALIFIER) to
+ b4_percent_code_bison_qualifiers(QUALIFIER).
+ (b4_check_user_names_wrap): Update for renames.
+ * src/muscle_tab.c, src/muscle_tab.h (muscle_percent_define_flag_if,
+ muscle_percent_define_default): New functions mimicking
+ b4_percent_define_flag_if and b4_percent_define_default.
+
+ For %define variables, report locations for invalid values and
+ redefinitions.
+ * data/bison.m4 (b4_percent_define_flag_if): Read
+ b4_percent_define_loc(VARIABLE) to report the location of an invalid
+ value for VARIABLE.
+ (b4_percent_define_default): Save a special location in
+ b4_percent_define_loc(VARIABLE) in case the default value for VARIABLE
+ must later be reported as invalid.
+ * src/muscle_tab.c (muscle_location_grow, muscle_location_decode): New
+ functions.
+ (muscle_percent_define_insert): Record the location of VARIABLE in
+ muscle percent_define_loc(VARIABLE), and use it to report the previous
+ location for a redefinition.
+ (muscle_percent_define_flag_if): Update like b4_percent_define_flag_if.
+ (muscle_percent_define_default): Update like b4_percent_define_default.
+ (muscle_grow_user_name_list): Rename to...
+ (muscle_user_name_list_grow): ... this for consistency and use
+ muscle_location_grow.
+ * src/muscle_tab.h (muscle_location_grow): Prototype.
+ * tests/input.at (%define errors): Update expected output.
+ * tests/skeletons.at (%define boolean variables: invalid skeleton
+ defaults): New test case.
+
+2007-02-28 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * src/print.c (lookahead_set, state_default_rule): Remove.
+ (print_reductions): Replace state_default_rule invocation with
+ equivalent use of yydefact, which was computed in token_actions in
+ tables.c.
+ (print_results): Don't allocate lookahead_set.
+
+2007-02-27 Paolo Bonzini <bonzini@gnu.org>
+
+ * data/lalr1.java: Prefix all private members with yy.
+
+2007-02-24 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Use YYFPRINTF instead of fprintf where appropriate. Reported by
+ Sebastien Fricker at
+ <http://lists.gnu.org/archive/html/bug-bison/2007-02/msg00035.html>.
+ * THANKS: Add Sebastien Fricker.
+ * data/glr.c, data/push.c, data/yacc.c (yy_reduce_print): Implement.
+ * doc/bison.texinfo (Tracing): Make it clearer that YYFPRINTF must
+ accept a variable number of arguments.
+
+2007-02-19 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * bootstrap: Remove occurrences of .#bootmp from lib/Makefile.
+
+2007-02-13 Juan Manuel Guerrero <juan.guerrero@gmx.de>
+
+ * djgpp/config.bat: Adjustments concerning the use of autoconf 2.61.
+ * djgpp/config.sed: Adjustments concerning the use of autoconf 2.61.
+ * djgpp/config.site: Adjustments concerning the use of autoconf 2.61.
+
+2007-02-11 Paul Eggert <eggert@cs.ucla.edu>
+
+ Undo my 2007-02-07 change, switching back to the c-strcase module
+ introduced in the 2007-02-03 change. Bruno Haible reported that
+ the 2007-02-07 change would be dangerous in Turkish if we add a
+ language whose name contains "i", since "i" is not lowercase "I"
+ in Turkish.
+ * bootstrap.conf (gnulib_modules): Add c-strcase. Remove strcase.
+ * lib/.cvsignore: Add c-ctype.c, c-ctype.h, c-strcase.h,
+ c-strcasecomp.c, c-strncasecmp.c. Remove strcasecmp.c, strncasecmp.c.
+ * m4/.cvsignore: Remove strcase.m4.
+ * src/getargs.c: Revert 2007-02-07 change, as follows.
+ Include c-strcase.h.
+ (language_argmatch): Use c_strcasecmp rather than strcasecmp.
+
+2007-02-11 Bruno Haible <bruno@clisp.org>
+
+ Enable the Java related testsuite tests when the only Java compiler
+ found is a gcj < 4.3. Discussed at
+ <http://lists.gnu.org/archive/html/bug-bison/2007-02/msg00016.html>.
+ * configure.ac (gt_JAVACOMP): Don't specify a target_version.
+
+2007-02-11 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * data/Makefile.am: Update copyright date.
+ * data/push.c (yypull_parse): Report memory exhaustion and return 2 if
+ yypstate_new returns NULL.
+ (yypstate_new): Return NULL if malloc does.
+ * src/reader.c (packgram): Move translation of rule actions from the
+ beginning of packgram to...
+ (check_and_convert_grammar): ... here right before packgram is invoked
+ so it's easier to write more complete comments, and remove redundant
+ code.
+
+2007-02-10 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ As in semantic actions, make @$ in %initial-action, %destructor, and
+ %printer imply %locations.
+ * src/scan-code.l (SC_SYMBOL_ACTION): Set locations_flag = true when
+ scanning @$.
+ * tests/actions.at (AT_CHECK_ACTION_LOCATIONS): New macro supporting...
+ (@$ in %initial-action implies %locations,
+ @$ in %destructor implies %locations,
+ @$ in %printer implies %locations): ... these new test cases.
+
+2007-02-07 Paul Eggert <eggert@cs.ucla.edu>
+
+ Undo most of the 2007-02-03 change, switching to the strcase module
+ now that gnulib strcase has been fixed.
+ * bootstrap.conf (gnulib_modules): Remove c-strcase. Add strcase.
+ * lib/.cvsignore: Remove c-ctype.c, c-ctype.h, c-strcase.h,
+ c-strcasecomp.c, c-strncasecmp.c. Add strcasecmp.c, strncasecmp.c
+ * m4/.cvsignore: Add strcase.m4.
+ * src/getargs.c: Revert 2007-02-03 change, as follows.
+ Don't include c-strcase.h.
+ (language_argmatch): Use strcasecmp rather than c_strcasecmp.
+ strcasecmp has "unspecified behavior" outside the POSIX locale,
+ but it works fine in practice if at least one argument is ASCII,
+ as is the case in Bison.
+
+2007-02-07 Paolo Bonzini <bonzini@gnu.org>
+
+ * tests/java.at: Skip tests if only one of javac/java is present.
+ Reported by Joel E. Denny.
+ * tests/atlocal.in: Adjust copyright years.
+
+2007-02-05 Paolo Bonzini <bonzini@gnu.org>
+
+ * data/lalr1.java (Stack): Work around old verifiers that disallow
+ access to the private fields of an inner class, from the outer class.
+ We can make Stack's fields public because user code doesn't have access
+ to the instance of Stack used by parse(). Reported by Paul Eggert.
+
+2007-02-03 Paul Eggert <eggert@cs.ucla.edu>
+
+ * .cvsignore: Add javacomp.sh, javaexec.sh. Is this really
+ the right spot for these files?
+ * bootstrap.conf (gnulib_modules): Add c-strcase.
+ * lib/.cvsignore: Add c-ctype.c c-ctype.h, c-strcasecomp.c,
+ c-strncasecmp.c.
+ * src/getargs.c: Include c-strcase.h.
+ (language_argmatch): Use c_strcasecmp rather than strcasecmp,
+ to avoid unspecified behavior.
+
+2007-02-01 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * doc/bison.texinfo (Decl Summary): Correct typo.
+
+2007-01-30 Paolo Bonzini <bonzini@gnu.org>
+
+ * data/bison.m4 (b4_percent_define_flag_if): Don't treat 0 as false.
+ Complain if the value does not match empty, "true" or "false".
+ * data/c++.m4: Adjust default definitions of %define variables.
+ * data/java.m4: Adjust default definitions of %define variables.
+ * doc/bison.texinfo (Decl Summary): Adjust the %define entry according
+ to above behavior.
+ * tests/input.at (Boolean %define variables): Test new behavior.
+
+2007-01-29 Paolo Bonzini <bonzini@gnu.org>
+
+ * NEWS: Mention java.
+ * TODO: Remove things that are done.
+ * bootstrap.conf: Add javacomp-script and javaexec-script.
+ * configure.ac: Invoke gt_JAVACOMP and gt_JAVAEXEC.
+
+ * data/Makefile.am: Add new files.
+ * data/java-skel.m4: New.
+ * data/java.m4: New.
+ * data/lalr1.java: New.
+
+ * doc/bison.texinfo: Put "A Complete C++ Example" under
+ C++ Parsers. Add Java Parsers. Put C++ Parsers and Java Parsers
+ under Other Languages.
+
+ * src/getargs.c (valid_languages): Add Java.
+ * src/getargs.h (struct bison_language): Update size of string fields.
+
+ * tests/Makefile.am: Add java.at.
+ * tests/atlocal.in: Add CONF_JAVA and CONF_JAVAC.
+ * tests/java.at: New.
+ * tests/testsuite.at: Include it.
+
+2007-01-28 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Clean up.
+ * src/scan-skel.l (at_directive_perform): Add at_directive_argc and
+ at_directive_argv arguments so these no longer have to be global
+ variables. Also, update the implementation for the following changes.
+ (fail_for_at_directive_too_many_args,
+ fail_for_at_directive_too_few_args): Add at_directive_name argument.
+ (at_directive_name): Remove as at_directive_argv[0] will be used for
+ this now.
+ (AT_DIRECTIVE_ARGC_MAX): Increment to make space in at_directive_argv
+ for the directive name.
+ (at_directive_argc, at_directive_argv): Make these local within
+ skel_lex instead of global.
+ (INITIAL): Update directive start action for above changes.
+ (SC_AT_DIRECTIVE_ARG): Rename to...
+ (SC_AT_DIRECTIVE_ARGS): ... this, and update for above changes.
+ (SC_AT_DIRECTIVE_SKIP_WS): Update.
+ (scan_skel): Move yylex_destroy to...
+ (skel_scanner_free): ... here.
+ * tests/skeletons.at (installed skeleton file name): Rename to...
+ (installed skeleton file names): ... this.
+
+2007-01-27 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * ChangeLog: For changes in doc/bison.texinfo, consistently reference
+ node names: say "Table of Symbols" not "Bison Symbols", and say "Decl
+ Summary" not "Directives".
+ * doc/bison.texinfo (Decl Summary, Calc++ Parser): Cross-reference the
+ %code entry in "Decl Summary" rather than the one in "Table of Symbols"
+ since the former is now the more complete one.
+ (Prologue Alternatives): Likewise and do the same for %defines.
+ (Table of Symbols): Add summary of %code, add summary of %define, and
+ move full %code documentation to...
+ (Decl Summary): ... here for consistency with other entries in these
+ sections.
+ Move %define entry in order to keep this list alphabetized.
+ Reword %define entry a little to put less emphasis on the skeleton
+ concept, which most users shouldn't have to think about.
+
+2007-01-26 Paul Eggert <eggert@cs.ucla.edu>
+
+ Adjust to recent gnulib changes.
+ * lib/.cvsignore: Remove stpcpy.h, strndup.h, strnlen.h.
+ Add string.h, string_.h, unistd_.h, wchar_.h.
+ * m4/.cvsignore: Add gnulib-common.m4, string_h.m4, wchar.m4.
+ * src/system.h: Don't include <stpcpy.h>; this is now done by
+ <string.h>.
+
+2007-01-23 Paolo Bonzini <bonzini@gnu.org>
+
+ Simplify implementation of unqualified %code, implement macros for
+ uniform treatment of boolean %define flags. Document %define.
+ * data/bison.m4 (b4_percent_define_ifdef, b4_percent_define_flag_if,
+ b4_percent_code_ifdef): New.
+ (b4_percent_code_get): Map unqualified %code to b4_percent_code().
+ * data/c++.m4: Define default value for global_tokens_and_yystype.
+ * data/glr.cc: Likewise.
+ * data/location.cc: Use b4_percent_define_flag_if.
+
+ * doc/bison.texinfo (Decl Summary): Document %define.
+
+ * src/parse-gram.y (Unqualified %code): Change muscle name to
+ b4_percent_code().
+ (content.opt): Default to empty.
+
+2007-01-17 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Implement support for relative and absolute skeleton file names.
+ Discussed starting at
+ <http://lists.gnu.org/archive/html/bison-patches/2006-12/msg00071.html>.
+ * doc/bison.texinfo (Decl Summary): Document in %skeleton entry.
+ (Bison Options): Document in --skeleton entry.
+ * src/output.c (output_skeleton): Use strncpy rather than strcpy since
+ full_skeleton can't necessarily hold all of pkgdatadir.
+ If the specified skeleton file name contains a `/', don't prepend
+ pkgdatadir.
+ * src/parse-gram.y (prologue_declaration): If the specified skeleton
+ file name contains a `/', prepend the grammar file directory.
+ * tests/Makefile.am (TESTSUITE_AT): Add skeletons.at.
+ * skeletons.at: New file.
+ (relative skeleton file names): New test case.
+ (installed skeleton file names): New test case.
+ * tests/testsuite.at: Include skeletons.at.
+
+ * bootstrap: Update copyright to 2007.
+
+2007-01-17 Paolo Bonzini <bonzini@gnu.org>
+
+ * bootstrap: Remove occurrences of .#bootmp from the files.
+
+2007-01-17 Akim Demaille <akim@epita.fr>
+
+ * doc/bison.texinfo (Calc++ Parser): Don't try to alias
+ nonterminals.
+ Use per-type %printer.
+
+2007-01-17 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * NEWS, data/c++-skel.m4, data/c++.m4, data/c-skel.m4, data/c.m4,
+ data/glr.c, data/glr.cc, data/lalr1.cc, data/location.cc,
+ djgpp/config.site, src/files.c, src/files.h, src/main.c,
+ src/muscle_tab.c, src/muscle_tab.h, src/parse-gram.y, src/reader.h,
+ src/scan-skel.h, src/scan-skel.l, tests/actions.at, tests/calc.at,
+ tests/glr-regression.at, tests/input.at, tests/local.at,
+ tests/output.at, tests/torture.at: Update copyright to 2007.
+
+2007-01-16 Akim Demaille <akim@epita.fr>
+
+ * doc/bison.texinfo (Calc++ Parsing Driver): Let "parse" return an
+ error code.
+ (Calc++ Scanner): Exit with failure if we can't open the input
+ file.
+ Accept "-" standing for stdin.
+ (Calc++ Top Level): Print the result only if the parsing was
+ successful.
+
+2007-01-16 Akim Demaille <akim@epita.fr>
+
+ * data/lalr1.cc (yy_reduce_print_): Add a missing end-of-line.
+
+2007-01-15 Paolo Bonzini <bonzini@gnu.org>
+ and Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Clean up %define and %code implementation in M4 some. Most
+ importantly, rename all related macros to be in the b4_percent_define
+ and b4_percent_code namespaces. Also, complete support for `.' in
+ %define variable names and %code qualifiers.
+ * data/bison.m4 (b4_check_user_names): Check for special
+ "SKELETON-NAMESPACE(name)" macros instead of using two nested
+ m4_foreach loops.
+ (b4_get_percent_define, b4_get_percent_code): Rename to...
+ (b4_percent_define_get, b4_percent_code_get): ... these.
+ Extend documentation with examples.
+ For SKELETON-NAMESPACE (as documented for b4_check_user_names), use
+ b4_percent_define_skeleton_variables and
+ b4_percent_code_skeleton_qualifiers.
+ Expect any value for the %define variable `foo' to be stored in the
+ macro named `b4_percent_define(foo)'; expect any %code blocks for the
+ qualifier `foo' to be stored in a macro named `b4_percent_code(foo)';
+ expect any unqualified %code blocks to be stored in a macro named
+ `b4_percent_code_unqualified'.
+ Use m4_indir so that %define variable names and %code qualifiers can
+ contain `.', which is allowed by the grammar parser.
+ (b4_percent_define_default): New macro to set a default value for a
+ %define variable.
+ (m4_wrap): Update wrapped code, and fix some underquoting.
+ (b4_check_user_names_wrap): Update and define outside the m4_wrap.
+ Expect grammar uses of %define variables and %code qualifiers to be
+ defined in b4_percent_define_user_variables and
+ b4_percent_code_user_qualifiers.
+ * data/c++.m4: Use b4_percent_define_default rather than
+ m4_define_default. Fix some underquoting. Skeleton usage of %define
+ variable define_location_comparison now implies skeleton usage of
+ %define variable filename_type.
+ * data/glr.c, data/glr.cc, data/lalr1.cc, data/location.cc,
+ data/push.c, data/yacc.c: Update macro names.
+ * src/parse-gram.y (prologue_declaration, grammar_declaration): Update
+ muscle names.
+
+2007-01-14 Juan Manuel Guerrero <juan.guerrero@gmx.de>
+
+ DJGPP specific issues.
+
+ * djgpp/config.site: Set ac_cv_path_mkdir to a sane DJGPP specific
+ default. Set gl_cv_absolute_wctype_h to a sane DJGPP specific default.
+
+2007-01-09 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * tests/glr-regression.at: Use AT_PARSER_CHECK rather than AT_CHECK to
+ run parsers in all tests so that Valgrind is invoked during
+ maintainer-check-valgrind.
+ (Duplicate representation of merged trees): Free all semantic values.
+ (Duplicated user destructor for lookahead): Likewise.
+
+2007-01-09 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * tests/local.at (AT_PARSER_CHECK): Add a PRE argument to specify a
+ command-line prefix.
+ * tests/torture.at (Exploding the Stack Size with Alloca): Stderr is
+ ignored, so use that PRE to set --log-fd=1 in VALGRIND_OPTS so we don't
+ miss Valgrind messages.
+ (Exploding the Stack Size with Malloc): Likewise.
+
+2007-01-09 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Ignore YYSTACK_USE_ALLOCA for push parsers since the stacks can't be
+ locals. Reported by Juan Manuel Guerrero at
+ <http://lists.gnu.org/archive/html/bug-bison/2007-01/msg00000.html>.
+ * data/push.c: Enclose the #ifdef YYSTACK_USE_ALLOCA in b4_push_if.
+ Fix some indentation also.
+ * tests/torture.at (Exploding the Stack Size with Alloca): Add comment
+ explaining this issue.
+
+2007-01-09 Paolo Bonzini <bonzini@gnu.org>
+ and Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Simplify union and prologue handling, and escape union and lex/parse
+ params with digraphs.
+ * data/bison.m4 (b4_pre_prologue, b4_post_prologue): Set their default
+ values to the empty string since these are no longer guaranteed
+ initialized by the front-end.
+ * data/glr.c, data/glr.cc, data/lalr1.cc, data/push.c, data/yacc.c: Add
+ braces around b4_user_stype since this is no longer done by the
+ front-end.
+ * src/files.c, src/files.h (pre_prologue_obstack,
+ post_prologue_obstack): Remove.
+ * src/muscle_tab.c (muscle_pair_list_grow): Don't duplicate header
+ comments here. Use MUSCLE_OBSTACK_SGROW so that values are escaped
+ with digraphs. This fixes lex params and parse params.
+ * src/muscle_tab.h (muscle_pair_list_grow): Update comments.
+ * src/output.c (prepare): Remove muscle insertion of the prologues.
+ (output): Remove freeing of pre_prologue_obstack and
+ post_prologue_obstack.
+ * src/parse-gram.y (prologue_declaration): Use muscle_code_grow rather
+ than prologue_augment for prologue parsing so you don't need prologue
+ obstacks.
+ (grammar_declaration): For %union RHS, use `braceless' instead of
+ "{...}" so that braces are already stripped and code is escaped with
+ digraphs.
+ * src/reader.c (prologue_augment): Remove.
+ (reader): Remove initialization of pre_prologue_obstack and
+ post_prologue_obstack.
+ * src/reader.h (prologue_augment): Remove.
+
+ * data/c.m4: Remove stray parenthesis.
+
+2007-01-08 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Remove quotes from variables names in %define directives and from
+ qualifiers in %code directives, and restrict the characters that are
+ allowed in them to M4-friendly ones. For %define, continue to support
+ the quoted form as a deprecated feature. Discussed starting at
+ <http://lists.gnu.org/archive/html/bison-patches/2007-01/msg00023.html>.
+ * NEWS (2.3a+): Add entry for the change to %define. Update entry for
+ %code.
+ * doc/bison.texinfo (Prologue Alternatives): Update.
+ (Decl Summary): In %defines entry, update mention of `%code requires'
+ and `%code provides'.
+ (C++ Location Values): Update %define uses.
+ (Calc++ Parser Interface): Likewise.
+ (Calc++ Parser): Likewise, and update `%code requires' uses.
+ (Table of Symbols): Update %code documentation.
+ * src/parse-gram.y (prologue_declaration): For %define variables, use
+ `variable' instead of `STRING'.
+ (grammar_declaration): For %code qualifiers, use `ID' instead of
+ `STRING'.
+ (variable): New nonterminal that takes an `ID' or a `STRING'.
+ * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Update %code
+ and %define uses.
+ * tests/calc.at (_AT_DATA_CALC_Y): Update %define use.
+ * tests/input.at (Reject unused %code qualifiers): Update %code uses.
+ (%define errors): Update %define uses.
+
+2007-01-08 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * src/parse-gram.y (prologue_declaration): Use MUSCLE_INSERT_STRING
+ instead of muscle_insert for %define values so that M4-special
+ characters are replaced with digraphs.
+ * tests/input.at (%define errors): Extend to check weird values.
+
+2007-01-08 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Instead of having skeletons declare all valid %define variables and
+ %code qualifiers, provide macros that retrieve the associated values
+ and build these lists automatically. Thus Bison will now warn when a
+ variable or qualifier is not used by the skeleton in the current
+ invocation regardless of whether it might sometimes be used by that
+ skeleton in other invocations. Also, move all %define value macros to
+ the b4_percent_define_ namespace, and remove the %define "NAME" {CODE}
+ form, which is replaced by %code.
+ * data/bison.m4 (b4_check_for_unrecognized_names): Rename to...
+ (b4_check_user_names): ... this, and change the series of valid name
+ arguments to a single list argument for names used in the skeleton
+ similar to the existing list argument for names used in the grammar.
+ Warn instead of complaining.
+ (b4_get_percent_define, b4_get_percent_code): New to retrieve %define
+ values and %code code, to format %code code properly, and to build
+ lists of all %define variables and %code qualifiers used in the
+ skeleton: b4_skeleton_percent_define_variables and
+ b4_skeleton_percent_code_qualifiers.
+ (b4_check_percent_define_variables, b4_check_percent_code_qualifiers):
+ Remove, and...
+ (m4_wrap): ... m4_wrap b4_check_user_names invocations instead so that
+ the skeleton names lists can finish building first. In place of
+ b4_used_percent_define_variables and b4_used_percent_code_qualifiers,
+ expect the lists b4_user_percent_define_variables and
+ b4_user_percent_code_qualifiers.
+ * data/c++.m4: Where setting default values for b4_parser_class_name,
+ b4_location_type, b4_filename_type, b4_namespace, and
+ b4_define_location_comparison, update their names to the
+ b4_percent_define_ namespace.
+ * data/glr.c: Don't use b4_check_percent_define_variables and
+ b4_check_percent_code_qualifiers. Use b4_get_percent_code.
+ * data/glr.cc, data/lalr1.cc: Likewise, and use b4_get_percent_define.
+ (b4_parser_class_name, b4_namespace): Define these using
+ b4_get_percent_define for parser_class_name and namespace.
+ * data/location.cc: Use b4_get_percent_define.
+ * data/push.c: Don't use b4_check_percent_define_variables and
+ b4_check_percent_code_qualifiers. Use b4_get_percent_code.
+ * data/yacc.c: Likewise, and don't call m4_exit in
+ b4_use_push_for_pull_if or m4_wrap code will never execute.
+ * src/muscle_tab.c, src/muscle_tab.h (muscle_grow_used_name_list):
+ Rename to...
+ (muscle_grow_user_name_list): ... this for consistency with the
+ terminology used in bison.m4.
+ * src/parse-gram.y (prologue_declaration): Prepend "percent_define_" to
+ %define variable names, and rename muscle used_percent_define_variables
+ to user_percent_define_variables.
+ (grammar_declaration): Rename muscle used_percent_code_qualifiers to
+ user_percent_code_qualifiers.
+ (content): Remove.
+ (content.opt): Replace content RHS with STRING RHS so %define "NAME"
+ {CODE} form is no longer accepted.
+ * tests/input.at (Reject bad %code qualifiers): Rename to...
+ (Reject unused %code qualifiers): ... this, and update test output.
+ (%define error): Update test output.
+
+2007-01-07 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Check for unrecognized %define variables similar to checking for
+ unrecognized %code qualifiers. Check for redefined %define variables.
+ * data/bison.m4 (b4_check_for_unrecognized_names): New macro that
+ generalizes...
+ (b4_check_percent_code_qualifiers): ... this, which now wraps it.
+ (b4_check_percent_define_variables): New, also wraps it.
+ * data/glr.c: Unless glr.cc is wrapping glr.c, declare no valid %define
+ variables using b4_check_percent_define_variables.
+ * data/glr.cc, data/lalr1.cc: Declare the valid %define variables as
+ all those exercised in the test suite and all those listed in the
+ `Default values' section of c++.m4. Are there others?
+ * data/push.c, data/yacc.c: Declare no valid %define variables.
+ * src/muscle_tab.c, src/muscle_tab.h (muscle_find_const): New function,
+ similar to muscle_find, but it works even when the muscle stores a
+ const value.
+ (muscle_grow_used_name_list): New function for constructing the used
+ name list muscles that b4_check_for_unrecognized_names requires.
+ * src/parse-gram.y (prologue_declaration): Warn if a variable is
+ %define'd more than once. Define the b4_used_percent_define_variables
+ muscle with muscle_grow_used_name_list.
+ (grammar_declaration): Abbreviate %code code with
+ muscle_grow_used_name_list.
+ * tests/input.at (%define errors): New.
+
+2007-01-06 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Provide warn_at, complain_at, and fatal_at function callbacks to the
+ skeletons, and use this for %code qualifier complaints.
+ * data/bison.m4 (b4_error_at): New, invoked by...
+ (b4_warn_at, b4_complain_at, b4_fatal_at): ... these new macros to wrap
+ the skeleton scanner's new @warn_at(...@), @complain_at(...@), and
+ @fatal_at(...@) directives.
+ (b4_check_percent_code_qualifiers): Rewrite to expect locations for
+ qualifiers in b4_used_percent_code_qualifiers and to use
+ b4_complain_at.
+ * src/location.c, src/location.h (boundary_set_from_string): New global
+ function.
+ * src/muscle_tab.c, src/muscle_tab.h (muscle_boundary_grow): New global
+ function.
+ * src/parse-gram.y (grammar_declaration): Add locations for qualifiers
+ to b4_used_percent_code_qualifiers.
+ * src/scan-skel.l (fail_for_at_directive_too_few_args): New static
+ function.
+ (AT_DIRECTIVE_ARGC_MAX): Increase for boundary arguments.
+ (lineno): Rename to...
+ (out_lineno): ... this so I don't misunderstand it again.
+ (SC_AT_DIRECTIVE_SKIP_WS): Don't increment out_lineno for newlines
+ here; these newlines are in the input but not the output file.
+ (SC_AT_DIRECTIVE_ARG): Likewise. Extract directive execution to...
+ (at_directive_perform): ... this new static function, and add handling
+ of new @warn_at(...@), @complain_at(...@), and @fatal_at(...@)
+ directives.
+ * tests/input.at (Reject bad %code qualifiers): Update test output with
+ locations and extend.
+
+ * tests/output.at (Output file name: [, Output file name: ]): Remove
+ bogus comment about these tests failing.
+
+2007-01-06 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Clean up b4_check_percent_code_qualifiers a little.
+ * data/bison.m4 (b4_check_percent_code_qualifiers): Expect qualifiers
+ in b4_used_percent_code_qualifiers to be double-M4-quoted. Rewrite
+ documentation and add examples.
+ * src/parse-gram.y (grammar_declaration): Double-M4-quote those
+ qualifiers here.
+
+2007-01-05 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Don't use m4_divert since it makes m4_divert_push and m4_divert_pop
+ unreliable -- especially when they're hidden inside another macro.
+ * data/bison.m4, data/c++-skel.m4, data/c++.m4, data/c-skel.m4,
+ data/c.m4: Remove m4_divert(-1).
+ * data/glr.c, data/glr.cc, data/lalr1.cc, data/location.cc,
+ data/push.c, data/yacc.c: Likewise, and replace m4_divert(0) with
+ m4_divert_push(0) and m4_divert_pop(0).
+ * src/output.c (output_skeleton): Don't add an m4_divert_push(0) and
+ an m4_wrap([m4_divert_pop(0)]) to the M4. Diversion -1, which is
+ pushed and popped by m4sugar, should be first on the stack.
+
+ Provide warn, complain, and fatal function callbacks to the skeletons.
+ This provides more flexibility than m4_fatal, improves the error
+ message format, and captures messages for translation. Discussed
+ starting at
+ <http://lists.gnu.org/archive/html/bison-patches/2006-12/msg00063.html>.
+ * data/bison.m4 (b4_error): New, invoked by...
+ (b4_warn, b4_complain, b4_fatal): ... these new macros to wrap the
+ skeleton scanner's new @warn(...@), @complain(...@), and @fatal(...@)
+ directives. Because these M4 macros might be called when the current
+ diversion is -1 or 0, m4_divert_push and m4_divert_pop is used; thus
+ the previous removal of uses of m4_divert, which caused trouble.
+ (b4_check_percent_code_qualifiers): Use b4_complain instead of
+ m4_fatal to report unrecognized %code qualifiers.
+ * data/c++-skel.m4: Use b4_complain instead of m4_fatal to report C++
+ push parser requests.
+ * data/glr.c: Use b4_complain instead of m4_fatal to report
+ non-deterministic push parser requests.
+ Update @output usage to @output(...@) form.
+ * data/glr.cc, data/lalr1.cc: Use b4_fatal instead of m4_fatal to
+ report missing %defines. Update @output usage to @output(...@) form.
+ * data/location.cc, data/push.c, data/yacc.c: Update @output usage to
+ @output(...@) form.
+ * src/main.c (main): Invoke skel_scanner_free.
+ * src/scan-skel.h (skel_scanner_free): Prototype new function.
+ * src/scan-skel.l (FLEX_NO_OBSTACK): Don't define; we now need the
+ obstack_for_string from flex-scanner.h.
+ (YY_DECL): Use to declare skel_lex static.
+ (decode_at_digraphs): Remove; now handled in the new
+ SC_AT_DIRECTIVE_ARG start condition.
+ (fail_for_at_directive_too_many_args, fail_for_invalid_at): New static
+ functions.
+ (at_directive_name, AT_DIRECTIVE_ARGC_MAX, at_directive_argc,
+ at_directive_argv): New static globals.
+ (INITIAL): Use fail_for_invalid_at.
+ Don't parse `@output file_name\n' or `@basename(...@)'. Instead,
+ recognize the start of a generalized `@directive(...@)' form and
+ start...
+ (SC_AT_DIRECTIVE_ARG): ... this new start condition to parse the
+ directive args (using the new obstack_for_string), to decode the
+ contained @ diagraphs, and to perform the directive. It recognizes
+ @basename(...@), @warn(...@), @complain(...@), @fatal(...@), and
+ @output(...@).
+ (SC_AT_DIRECTIVE_SKIP_WS): New start condition started by
+ SC_AT_DIRECTIVE_ARG to skip whitespace after the argument delimiter,
+ `@,'.
+ (scan_skel): Initialize obstack_for_string on the first call.
+ (skel_scanner_free): New function to free obstack_for_string.
+ * tests/input.at (Reject bad %code qualifiers): Update test output.
+
+2007-01-04 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Consolidate the 4 prologue alternative directives (%code, %requires,
+ %provides, and %code-top) into a single %code directive with an
+ optional qualifier field. Discussed at
+ <http://lists.gnu.org/archive/html/bison-patches/2007-01/msg00012.html>.
+ * NEWS (2.3a+): Rewrite the existing entry for the prologue
+ alternatives.
+ * doc/bison.texinfo (Prologue Alternatives): Update.
+ (Decl Summary): Update to %code "requires" and %code "provides".
+ (Calc++ Parser): Update to %code "requires".
+ (Table of Symbols): Remove entries for %requires, %provides, and
+ %code-top. Rewrite %code entry, and add a %code "QUALIFIER" entry.
+ * data/bison.m4 (b4_user_provides, b4_user_requires): Remove as these
+ are replaced by b4_percent_code_provides and b4_percent_code_requires,
+ which are skeleton-specific.
+ (b4_check_percent_code_qualifiers): New. A skeleton can use this to
+ declare what %code qualifiers it supports and to complain if any other
+ qualifiers were used in the grammar.
+ * data/glr.cc: Update to use b4_user_code([b4_percent_code_requires])
+ and b4_user_code([b4_percent_code_provides]) in place of
+ b4_user_requires and b4_user_provides.
+ * data/glr.c, data/lalr1.cc, data/push.c, data/yacc.c: Likewise.
+ Add b4_user_code([b4_percent_code_top]) and
+ b4_user_code([b4_percent_code]).
+ Invoke b4_check_percent_code_qualifiers.
+ * src/parse-gram.y (PERCENT_CODE_TOP, PERCENT_PROVIDES,
+ PERCENT_REQUIRES): Remove.
+ (grammar_declaration): Remove RHS's for %code-top, %provides, and
+ %requires. Rewrite the %code RHS as the unqualified form defining the
+ muscle b4_percent_code. Add another RHS for the qualified %code form,
+ which defines muscles of the form b4_percent_code_QUALIFIER and the
+ b4_used_percent_code_qualifiers muscle.
+ * src/scan-gram.l (PERCENT_CODE_TOP, PERCENT_PROVIDES,
+ PERCENT_REQUIRES): Remove.
+ * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Update to use
+ %code "requires" and %code "provides".
+ * tests/input.at (Reject bad %code qualifiers): New.
+
+2007-01-03 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Use the new code_props interface for destructors and printers.
+ * src/symtab.h (symbol, semantic_type): Remove destructor_location and
+ printer_location members, and change the type of the destructor and
+ printer members to code_props.
+ (symbol_destructor_set, symbol_destructor_get, symbol_printer_set,
+ symbol_printer_get, semantic_type_destructor_set,
+ semantic_type_printer_set, default_tagged_destructor_set,
+ default_tagless_destructor_set, default_tagged_printer_set,
+ default_tagless_printer_set): Use code_props in arguments and return
+ types in place of char const * and location.
+ (symbol_destructor_location_get, symbol_printer_location_get): Remove
+ since the locations are now contained in the return of
+ symbol_destructor_get and symbol_printer_get.
+ * src/output.c (symbol_destructors_output, symbol_printers_output):
+ Replace with...
+ (symbol_code_props_output): ... this to eliminate duplicate code.
+ (output_skeleton): Update to use symbol_code_props_output.
+ * src/reader.c (symbol_should_be_used): Update use of
+ symbol_destructor_get.
+ * src/symlist.c (symbol_list_destructor_set, symbol_list_printer_set):
+ Update uses of the various _destructor_set and _printer_set functions.
+ * src/symtab.c: (default_tagged_destructor_location,
+ default_tagless_destructor_location, default_tagged_printer_location,
+ default_tagless_printer_location): Remove since we...
+ (default_tagged_destructor, default_tagless_destructor,
+ default_tagged_printer, default_tagless_printer): ... change the type
+ of these to code_props.
+ (symbol_new, semantic_type_new, symbol_destructor_set,
+ semantic_type_destructor_set, symbol_destructor_get,
+ symbol_printer_set, semantic_type_printer_set, symbol_printer_get,
+ symbol_check_alias_consistency, default_tagged_destructor_set,
+ default_tagless_destructor_set, default_tagged_printer_set,
+ default_tagless_printer_set): Update.
+ (symbol_destructor_location_get, symbol_printer_location_get): Remove.
+ (SYMBOL_CODE_PRINT): New similar to SYMBOL_ATTR_PRINT but for
+ code_props members.
+ (symbol_print): Use SYMBOL_CODE_PRINT.
+
+2007-01-03 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Use the new code_props interface for rule actions.
+ * src/symlist.h (symbol_list): Replace action, action_location, and
+ used members with a code_props action_props member.
+ * src/reader.c (symbol_should_be_used, grammar_rule_check,
+ grammar_midrule_action, grammar_current_rule_merge_set,
+ grammar_current_rule_symbol_append, packgram): Update.
+ * src/scan-code.h (translate_rule_action): Remove, no longer used.
+ * src/scan-code.l (handle_action_dollar): Update.
+ (translate_rule_action): Remove, no longer used.
+ * src/symlist.c (symbol_list_sym_new, symbol_list_syms_print): Update.
+
+2007-01-02 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Use the new code_props interface in parse-gram.y.
+ * src/parse-gram.y (prologue_declaration, braceless, epilogue.opt):
+ Update all uses of translate_* functions to use the new code_props
+ interface and to use gram_scanner_last_string_free and
+ code_scanner_last_string_free where possible.
+ (grammar_declaration): symbol_list_destructor_set and
+ symbol_list_printer_set now perform the translation, so don't do it
+ here. Use gram_scanner_last_string_free where possible.
+ * src/scan-code.h, src/scan-code.l (translate_symbol_action,
+ translate_code): Remove, no longer used.
+ * src/symlist.h, src/symlist.c (symbol_list_destructor_set,
+ symbol_list_printer_set): Perform code translation here rather than
+ depending on the caller to do so.
+
+ * src/symlist.h (struct symbol_list): Correct some documentation typos.
+ * src/scan-gram.h (gram_last_string): Remove declaration.
+ * src/scan-gram.l (last_string): Declare it static.
+
+2007-01-02 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Encapsulate code properties and related functionality for the various
+ destructors, printers, and actions into a code_props structure and
+ interface. This patch merely implements code_props in scan-code.h and
+ scan-code.l. Future patches will rewrite other modules to use it.
+ Discussed starting at
+ <http://lists.gnu.org/archive/html/bison-patches/2006-11/msg00020.html>.
+ * src/location.h (EMPTY_LOCATION_INIT): Define so that it's easier to
+ consistently initialize const structs that have an empty location
+ field.
+ * src/location.c (empty_location): Initialize with EMPTY_LOCATION_INIT
+ to ensure consistency.
+ * src/scan-code.h (code_props): New structure.
+ (code_props_none_init, CODE_PROPS_NONE_INIT, code_props_none): New
+ function, macro, and const global variable for initializing a
+ code_props with no code.
+ (code_props_plain_init, code_props_symbol_action_init,
+ code_props_rule_action_init, code_props_translate_code): The rest of
+ the new code_props functional interface. Among other things, the init
+ functions set the code_props kind field so that
+ code_props_translate_code will know whether to behave like
+ translate_symbol_action, translate_rule_action, or translate_code.
+ These old translate functions must remain until all other modules are
+ updated to use the new code_props interface.
+ (code_scanner_last_string_free): New function similar to
+ gram_scanner_last_string_free.
+ (code_scanner_free): Add documentation.
+ * src/scan-code.l: Implement the new interface.
+ (code_lex): Make it static, add a code_props* argument, and remove the
+ rule argument.
+ (last_string): New static global similar to the one in scan-gram.l.
+ (SC_RULE_ACTION): Update to use the code_props* argument to code_lex
+ instead of rule.
+ (SC_SYMBOL_ACTION): For $$, set the is_value_used member of the
+ code_props since Bison may one day use this information for destructors
+ and printers.
+ (<*><<EOF>>): Use STRING_FINISH so that last_string is set.
+ (handle_action_dollar): Use symbol_list_n_get and set used flag
+ directly since symbol_list_n_used_set is removed.
+ (translate_action): Add a code_props* argument and remove the rule,
+ action, and location arguments. Pass the code_props* on to code_lex.
+ (translate_rule_action, translate_symbol_action, translate_code):
+ Rewrite as wrappers around the new code_props interface.
+ * src/symlist.h, src/symlist.c (symbol_list_n_used_set): Remove since
+ it would eventually need to break the encapsulation of code_props.
+
+2007-01-01 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * etc/.cvsignore: New.
+
+2007-01-01 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Add maintainer-push-check to run maintainer-check using push parsing in
+ place of pull parsing where available.
+ * Makefile.am (maintainer-push-check): New.
+ * data/bison.m4 (b4_use_push_for_pull_if): New.
+ * data/push.c: Redefine b4_push_if and b4_use_push_for_pull_if
+ appropriately based on their existing values.
+ (yypush_parse): Don't print push-parser-specific diagnostics if push
+ parsing is being used in place of pull parsing.
+ * data/yacc.c: If push parsing should replace pull parsing, redirect to
+ push.c.
+ * src/output.c (prepare): Check BISON_USE_PUSH_FOR_PULL environment
+ variable, and insert b4_use_push_for_pull_flag into muscles.
+ * tests/Makefile.am (maintainer-push-check): New.
+
+2006-12-31 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * data/push.c (yypush_parse): Set yynew = 1 at the end of a parse
+ (whether successful or failed) so that yypush_parse can be invoked
+ again to start a new parse using the same yypstate.
+ * tests/torture.at (AT_DATA_STACK_TORTURE): For push mode, extend to
+ check multiple yypull_parse invocations on the same yypstate. For pull
+ mode, extend to check multiple yyparse invocations.
+ (Exploding the Stack Size with Alloca): Extend to try with
+ %push-pull-parser.
+ (Exploding the Stack Size with Malloc): Likewise.
+
+ * tests/calc.at (Simple LALR Calculator): Don't specify
+ %skeleton "push.c" since %push-pull-parser implies that now.
+ * tests/headers.at (export YYLTYPE): Don't check for the push
+ declarations. Otherwise, this test case can't be used to see if push
+ mode can truly emulate pull mode.
+ * tests/input.at (Torturing the Scanner): Likewise.
+ * tests/local.at (AT_YACC_OR_PUSH_IF, AT_PUSH_IF): Remove.
+ (AT_YYERROR_SEES_LOC_IF): Rather than AT_YACC_OR_PUSH_IF, use
+ AT_YACC_IF, which now includes the case of push mode since %skeleton
+ need not be used for push mode. This will be more intuitive once
+ push.c is renamed to yacc.c.
+
+2006-12-31 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ For push mode, convert yyparse from a macro to a function, invoke yylex
+ instead of passing a yylexp argument to yypull_parse, and don't
+ generate yypull_parse or yyparse unless %push-pull-parser is declared.
+ Discussed starting at
+ <http://lists.gnu.org/archive/html/bison-patches/2006-12/msg00163.html>.
+ * data/bison.m4 (b4_pull_if): New.
+ * data/c.m4 (b4_identification): Define YYPULL similar to YYPUSH.
+ * data/push.c: Improve M4 quoting a little.
+ (b4_generate_macro_args, b4_parenthesize): Remove.
+ (yyparse): If there's a b4_prefix, #define this to b4_prefix[parse]
+ any time a pull parser is requested.
+ Don't #define this as a wrapper around yypull_parse. Instead, when
+ both push and pull are requested, make it a function that does that
+ same thing.
+ (yypull_parse): If there's a b4_prefix, #define this to
+ b4_prefix[pull_parse] when both push and pull are requested.
+ Don't define this as a function unless both push and pull are
+ requested.
+ Remove the yylexp argument and hard-code yylex invocation instead.
+ * etc/bench.pl.in (bench_grammar): Use %push-pull-parser instead of
+ %push-parser.
+ * src/getargs.c (pull_parser): New global initialized to true.
+ * getargs.h (pull_parser): extern it.
+ * src/output.c (prepare): Insert pull_flag muscle.
+ * src/parse-gram.y (PERCENT_PUSH_PULL_PARSER): New token.
+ (prologue_declaration): Set both push_parser and pull_parser = true for
+ %push-pull-parser. Set push_parser = true and pull_parser = false for
+ %push-parser.
+ * src/scan-gram.l: Don't accept %push_parser as an alternative to
+ %push-parser since there's no backward-compatibility concern here.
+ Scan %push-pull-parser.
+ * tests/calc.at (Simple LALR(1) Calculator): Use %push-pull-parser
+ instead of %push-parser.
+ * tests/headers.at (export YYLTYPE): Make yylex static, and don't
+ prototype it in the module that calls yyparse.
+ * tests/input.at (Torturing the Scanner): Likewise.
+ * tests/local.at (AT_PUSH_IF): Check for %push-pull-parser as well.
+
+2006-12-26 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Update etc/bench.pl. Optimize push mode a little (the yyn change
+ deserves most of the credit).
+ * Makefile.am (SUBDIRS): Add etc subdirectory.
+ * configure.ac (AC_CONFIG_FILES): Add etc/bench.pl and etc/Makefile.
+ * data/push.c (b4_declare_parser_state_variables): Move yyn, yyresult,
+ yytoken, yyval, and yyloc declarations to...
+ (yyparse or yypush_parse): ... here to improve performance. For
+ yypush_parse invocations after the first, be sure to assign yyn its old
+ value again.
+ (yypstate_new): Don't bother initializing the yyresult field since the
+ initial value isn't used.
+ (yyn, yyresult, yytoken, yyval, yyloc): For each NAME in this list,
+ remove the #define that, in push mode, set it to yyps->NAME.
+ * etc/Makefile.am: New.
+ * etc/bench.pl: Remove and build it instead from...
+ * etc/bench.pl.in: ... this new file. Use @abs_top_builddir@ to invoke
+ "tests/bison" from the build directory by default rather than just
+ invoking "bison" from $PATH.
+ (calc_grammar): Update push parser code: don't declare yylval globally,
+ don't define yyparse_wrapper, and don't #define yyparse.
+ (bench_grammar): Update to check all working combinations of yacc.c,
+ push.c, impure, pure, pull, and push.
+
+2006-12-25 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ For push mode, add pull wrappers around yypush_parse.
+ * data/push.c: (b4_generate_macro_args, b4_parenthesize): New macros.
+ (yypull_parse): New function wrapping yypush_parse.
+ (yyparse): New #define wrapping yypull_parse.
+ * tests/calc.at (_AT_DATA_CALC_Y): Call yyparse even when %push-parser
+ is declared.
+ * tests/headers.at (export YYLTYPE): Make yylex global. For push mode,
+ prototype yylex in the module that calls yyparse, and don't prototype
+ yyparse there. Otherwise, the yyparse expansion won't compile.
+ * tests/input.at (Torturing the Scanner): Likewise.
+
+2006-12-25 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Enable push parsers to operate in impure mode. Thus, %push-parser no
+ longer implies %pure-parser. The point of this change is to move
+ towards being able to test the push parser code by running the entire
+ test suite as if %push-parser had been declared.
+ * data/push.c (yypush_parse): For impure mode, remove the
+ yypushed_char, yypushed_val, and yypushed_loc arguments.
+ Instead, declare these as local variables initialized to the global
+ yychar, yylval, and yylloc.
+ For the first yypush_parse invocation only, restore the initial values
+ of these global variables when it's time to read a token since they
+ have been overwritten.
+ * src/parse-gram.y (prologue_declaration): Don't set pure_parser for
+ %push-parser.
+ * tests/calc.at (Simple LALR(1) Calculator): Always declare
+ %pure-parser along with %push-parser since this test case was designed
+ for pure push parsers.
+ * tests/local.at (AT_PURE_OR_PUSH_IF): Remove unused.
+ (AT_YACC_OR_PUSH_IF): New.
+ (AT_YYERROR_SEES_LOC_IF): Fix enough that the test suite passes, but
+ add a note that it's still wrong for some cases (as it has been for a
+ while).
+ (AT_PURE_LEX_IF): Use AT_PURE_IF instead of AT_PURE_OR_PUSH_IF since
+ %push-parser no longer implies %pure-parser.
+
2006-12-20 Joel E. Denny <jdenny@ces.clemson.edu>
Remove some unnecessary differences between the pull parser code and
documentation instead.
(Calc++ Parser): Use `%require "@value{VERSION}"' rather than
`%require "2.3b"' so that the example is always up-to-date.
- (Bison Symbols): Add entries for %language and %skeleton.
+ (Table of Symbols): Add entries for %language and %skeleton.
* examples/extexi (normalize): Instead of replacing every %require
argument with the current Bison version, just substitute for
`@value{VERSION}'. This guarantees that we're testing what actually
* doc/bison.texinfo (C++ Parser Interface): Prefer %language
over %skeleton.
- (Directives): Document %language and %skeleton.
+ (Decl Summary): Document %language and %skeleton.
(Command line): Document -L.
* examples/extexi: Rewrite %require directive.
(2.3a): Annotate this entry to say the old forms of these features were
also experimental.
* doc/bison.texinfo (Prologue Alternatives, Freeing Discarded Symbols,
- Bison Symbols): Say they're experimental. Comment out any mention
+ Table of Symbols): Say they're experimental. Comment out any mention
of Java (we'll want this back eventually).
2006-12-01 Joel E. Denny <jdenny@ces.clemson.edu>
%file-prefix, %name-prefix, and %output. Discussed at
<http://lists.gnu.org/archive/html/help-bison/2006-09/msg00001.html>.
* NEWS (2.3a+): Mention.
- * doc/bison.texinfo (Decl Summary, Bison Symbols): Add entry for new
+ * doc/bison.texinfo (Decl Summary, Table of Symbols): Add entry for new
form of %defines, and remove `=' from entries for %file-prefix,
%name-prefix, and %output.
* src/parse-gram.y (prologue_declaration): Implement.
Rename <!> to <>. Discussed starting at
<http://lists.gnu.org/archive/html/bison-patches/2006-11/msg00039.html>.
* NEWS (2.3a+): Update.
- * doc/bison.texinfo (Freeing Discarded Symbols, Bison Symbols):
+ * doc/bison.texinfo (Freeing Discarded Symbols, Table of Symbols):
Update.
* src/parse-gram.y (TYPE_TAG_NONE, generic_symlist_item): Implement.
* src/scan-gram.l (INITIAL): Implement.
* NEWS (2.3a+): Mention.
* doc/bison.texinfo (Freeing Discarded Symbols): Document this and the
previous change today related to mid-rules.
- (Bison Symbols): Remove %symbol-default and add <*> and <!>.
+ (Table of Symbols): Remove %symbol-default and add <*> and <!>.
* src/parse-gram.y (PERCENT_SYMBOL_DEFAULT): Remove.
(TYPE_TAG_ANY): Add as <*>.
(TYPE_TAG_NONE): Add as <!>.
alternatives to...
(Prologue Alternatives): ... this new section, and extend it to discuss
all 4 directives in detail.
- (Bison Symbols): Clean up discussion of prologue alternatives and add
- %code-top.
+ (Table of Symbols): Clean up discussion of prologue alternatives and
+ add %code-top.
2006-10-16 Juan Manuel Guerrero <juan.guerrero@gmx.de>
<http://lists.gnu.org/archive/html/bison-patches/2006-09/msg00007.html>.
* NEWS (2.3+): Add %symbol-default to example.
* bison.texinfo (Freeing Discarded Symbols): Likewise.
- (Bison Symbols): Add entry for %symbol-default.
+ (Table of Symbols): Add entry for %symbol-default.
* src/parse-gram.y (PERCENT_SYMBOL_DEFAULT): New token.
(generic_symlist, generic_symlist_item): New nonterminals for creating
a list in which each item is a symbol, semantic type, or
* doc/bison.texinfo (The prologue): Update names, and replace remaining
prologue blocks with %*-header declarations.
(Calc++ Parser): Likewise.
- (Bison Declaration Summary): Update names.
- (Bison Symbols): Update description.
+ (Decl Summary): Update names.
+ (Table of Symbols): Update description.
* src/parse-gram.y (PERCENT_AFTER_DEFINITIONS): Update to...
(PERCENT_END_HEADER): ... this.
(PERCENT_BEFORE_DEFINITIONS): Update to...
header and code file.
* doc/bison.texinfo (Prologue): Show use of %before-definitions instead
of prologues for %union dependencies.
- (Bison Declaration Summary): In %defines description, mention the
- effect of %before-definitions and %after-definitions on the header
- file.
+ (Decl Summary): In %defines description, mention the effect of
+ %before-definitions and %after-definitions on the header file.
(Calc++ Parser): Forward declare driver in a %before-definitions rather
than in the pre-prologue so that make check succeeds.
- (Bison Symbols): Add entries for %before-definitions and
+ (Table of Symbols): Add entries for %before-definitions and
%after-definitions.
* src/parse-gram.y (PERCENT_BEFORE_DEFINITIONS): New token for
%before-definitions.
in the yychar entry.
In the yychar entry, remove mention of the local yychar case (pure
parser) since this is irrelevant information when writing semantic
- actions and since it's already discussed in `Bison Symbols' where
+ actions and since it's already discussed in `Table of Symbols' where
yychar is otherwise described as an external variable.
In the yychar entry, don't call it the `current' look-ahead since it
isn't when semantic actions are deferred.
`current' look-ahead, and do mention yylval and yylloc.
(Error Recovery): Cross-reference `Action Features' when mentioning
yyclearin.
- (Bison Symbols): In the yychar entry, don't call it the `current'
+ (Table of Symbols): In the yychar entry, don't call it the `current'
look-ahead.
In the yylloc and yylval entries, mention look-ahead usage.
-----
Copyright (C) 1987, 1988, 1991, 1992, 1993, 1994, 1995, 1996,
- 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free
- Software Foundation, Inc.
+ 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
+ Free Software Foundation, Inc.
Copying and distribution of this file, with or without
modification, are permitted provided the copyright notice and this
notice are preserved.
-
-$Id$
projects / bison.git / blobdiff