X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/72c5b9828e08091a2e3d567bbcd0b4004749f5f9..905f069774cbcf94c6f46e8768e1f6a4a2e72591:/ChangeLog?ds=sidebyside diff --git a/ChangeLog b/ChangeLog index 6d3b993e..aaf9c616 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,1370 @@ +2008-11-11 Paolo Bonzini + + * bootstrap.conf: Replace m4/warning.m4 with warnings module. + * configure.ac: Adjust usage. + * lib/Makefile.am: Replace $(WARNING_CFLAGS) with $(WARN_CFLAGS). + * src/Makefile.am: Replace $(WARNING_CFLAGS) with $(WARN_CFLAGS). + * tests/atlocal.in: Replace $(WARNING_*FLAGS) with $(WARN_*FLAGS). + +2008-11-10 Di-an Jan + + Workaround Java's ``code too large'' problem for parser tables + in most cases, by using one function per initialization. + * data/java.m4 (b4_typed_parser_table, b4_integral_parser_table): New. + * data/lalr1.java (yypact_, yydefact_, yypgoto_, yydefgoto_, + yytable_, yycheck_, yystos_, yytoken_number_, yyr1_, yyr2_, yyrhs_ + yyprhs_, yyrline_, yytranslate_table_): Use b4_integral_parser_table. + (yytname_): Use b4_typed_parser_table. + * doc/bison.texinfo (Java Bison Interface): Add note on Java's + ``code too large'' error. + +2008-11-10 Di-an Jan + + * NEWS: Document them. + + General Java skeleton improvements. + * configure.ac (gt_JAVACOMP): Request target of 1.4, which allows + using gcj < 4.3 in the testsuite, according to comments in + gnulib/m4/javacomp.m4. + * data/java.m4 (stype, parser_class_name, lex_throws, throws, + location_type, position_type): Remove extraneous brackets from + b4_percent_define_default. + (b4_lex_param, b4_parse_param): Remove extraneous brackets from + m4_define and m4_define_default. + * data/lalr1.java (b4_pre_prologue): Change to b4_user_post_prologue, + which marks the end of user code with appropriate syncline, like all + the other skeletons. + (b4_user_post_prologue): Add. Don't silently drop. + (yylex): Remove. + (parse): Inline yylex. + * doc/bison.texinfo (bisonVersion, bisonSkeleton): Document. + (%{...%}): Fix typo of %code imports. + * tests/java.at (AT_JAVA_COMPILE): Add "java" keyword. + + Support annotations on parser class with %define annotations. + * data/lalr1.java (annotations): Add to parser class modifier. + * doc/bison.texinfo (Java Parser Interface): Document + %define annotations. + (Java Declarations Summary): Document %define annotations. + * tests/java.at (Java parser class modifiers): Test annotations. + + Do not generate code for %error-verbose unless requested. + * data/lalr1.java (errorVerbose): Rename to yyErrorVerbose. + Make private. Make conditional on %error-verbose. + (getErrorVerbose, setErrorVerbose): New. + (yytnamerr_): Make conditional on %error-verbose. + (yysyntax_error): Make some code conditional on %error-verbose. + * doc/bison.texinfo (Java Bison Interface): Remove the parts + about %error-verbose having no effect. + (getErrorVerbose, setErrorVerbose): Document. + + Move constants for token names to Lexer interface. + * data/lalr1.java (Lexer): Move EOF, b4_token_enums(b4_tokens) here. + * data/java.m4 (b4_token_enum): Indent for move to Lexer interface. + (parse): Qualify EOF to Lexer.EOF. + * doc/bison.texinfo (Java Parser Interface): Move documentation of + EOF and token names to Java Lexer Interface. + * tests/java.at (_AT_DATA_JAVA_CALC_Y): Remove Calc qualifier. + + Make yyerror public. + * data/lalr1.java (Lexer.yyerror): Use longer parameter name. + (yyerror): Change to public. Add Javadoc comments. Use longer + parameter names. Make the body rather than the declarator + conditional on %locations. + * doc/bison.texinfo (yyerror): Document. Don't mark as protected. + + Allow user to add code to the constructor with %code init. + * data/java.m4 (b4_init_throws): New, for %define init_throws. + * data/lalr1.java (YYParser.YYParser): Add b4_init_throws. + Add %code init to the front of the constructor body. + * doc/bison.texinfo (YYParser.YYParser): Document %code init + and %define init_throws. + (Java Declarations Summary): Document %code init and + %define init_throws. + * tests/java.at (Java %parse-param and %lex-param): Adjust grep. + (Java constructor init and init_throws): Add tests. + +2008-11-10 Akim Demaille + + Update TODO. + * TODO (-D): is implemented. + (associativity): Same precedence must have the same associativity. + For instance, how can a * b / c be parsed if * is %left and / is + %right? + (YYERRORCODE, YYFAIL, YYBACKUP): New. + +2008-11-10 Akim Demaille + + Formatting changes. + +2008-11-10 Akim Demaille + + More information about the symbols. + * src/output.c (type_names_output): Document all the symbols, + including those that don't have a type-name. + (symbol_definitions_output): Define "is_token" and + "has_type_name". + * data/lalr1.cc (b4_type_action_): Skip symbols that have an empty + type-name, now that they are defined too in b4_type_names. + +2008-11-10 Akim Demaille + + Regen. + +2008-11-10 Akim Demaille + + Make parser::yytranslate static. + Small speedup (1%) on the list grammar. And makes yytranslate_ available + in non member functions. + + * data/lalr1.cc (yytranslate_): Does not need to be a instance + function. + +2008-11-10 Akim Demaille + + 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 + + Comment changes. + +2008-11-10 Akim Demaille + + 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 + + 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 + + Formatting changes. + * data/lalr1.cc: here. + +2008-11-10 Akim Demaille + + 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 + + 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 + + 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 + + --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 + + muscles_output. + * src/output.c (muscles_output): New, extracted from... + (output_skeleton): here. + Adjust. + +2008-11-10 Akim Demaille + + Formatting changes. + +2008-11-10 Akim Demaille + + Update the variant example. + * examples/variant.yy: Formatting changes. + One stage build. + +2008-11-10 Akim Demaille + + 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 + + Test variants. + * tests/c++.at (AT_CHECK_VARIANTS): New. + Use it with and without %define assert. + +2008-11-10 Akim Demaille + + 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 + + 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 + + fix eof condition + +2008-11-09 Akim Demaille + + Fix --help. + +2008-11-09 Akim Demaille + + Require the generation of parse-gram.output. + * src/Makefile.am (YACC): Pass --report=all. + +2008-11-09 Akim Demaille + + Formatting changes. + +2008-11-09 Akim Demaille + + Update TODO. + * TODO: Remove obsolete items. + Update others. + +2008-11-09 Akim Demaille + + 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 + + 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 + + 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 + + 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 + + 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 + + Rename data_type and stack_symbol_type. + * data/lalr1.cc (data_type): Rename as... + (stack_symbol_type): this. + +2008-11-09 Akim Demaille + + 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 + + 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 + + Agregate yylval and yylloc. + * data/lalr1.cc (parser::yylval, parser::yylloc): Replace by... + (parser::yyla): this. + +2008-11-09 Akim Demaille + + 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 + + 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 + + Remove unused variable. + * src/output.c (type_names_output): Remove unused variable sep. + +2008-11-09 Paolo Bonzini + + Change tests/output.at quoting. + * tests/output.at (AT_CHECK_OUTPUT): Use conventional m4 quoting when + expanding arguments. + +2008-11-07 Joel E. Denny + + 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 + + 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 + + Moving push traces into yypush_. + * data/lalr1.cc (yypush_): Now takes a optional trace message. + Adjust all uses. + +2008-11-07 Akim Demaille + + 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 + + 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 + + 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 + + -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 + + 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 + + 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 + + Fix --help. + * src/getargs.c (usage): Fix help string for -W. + +2008-11-07 Akim Demaille + + 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 + + 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 + + Add "%define assert" to variants. + This is used to help the user catch cases where some value gets + ovewritten by a new one. This should not happen, as this will + probably leak. + + Unfortunately this uncovered a bug in the C++ parser itself: the + lookahead value was not destroyed between two calls to yylex. For + instance if the previous lookahead was a std::string, and then an int, + then the value of the std::string was correctly taken (i.e., the + lookahead was now an empty string), but std::string structure itself + was not reclaimed. + + This is now done in variant::build(other&) (which is used to take the + value of the lookahead): other is not only stolen from its value, it + is also destroyed. This incurs a new performance penalty of a few + percent, and union becomes faster again. + + * data/lalr1-fusion.cc (variant::build(other&)): Destroy other. + (b4_variant_if): New. + (variant::built): New. + Use it whereever the status of the variant changes. + * etc/bench.pl.in: Check the penalty of %define assert. + +2008-11-07 Akim Demaille + + Use "%define variant" in bench.pl. + * etc/bench.pl.in: No longer use the pseudo directive %variants, + just use %define variants. + +2008-11-07 Akim Demaille + + Regen. + * src/parse-gram.h, src/parse-gram.c: Regen. + +2008-11-04 Joel E. Denny + + Fix user actions without a trailing semicolon. + Reported by Sergei Steshenko at + . + * THANKS (Sergei Steshenko): Add. + * src/scan-code.l (SC_RULE_ACTION): Fix it. + * tests/regression.at (Fix user actions without a trailing semicolon): + New test case. + +2008-11-04 Akim Demaille + + Use b4_copyright_years. + * data/yacc.c (b4_copyright_years): New. + Fix its value according to the comments in the file. + Use it and undefine it. + +2008-11-04 Akim Demaille + + Formatting changes. + * data/lalr1-fusion.cc, src/parse-gram.y: here. + +2008-11-04 Akim Demaille + + Formatting changes. + * data/lalr1-fusion.cc: here. + +2008-11-04 Akim Demaille + + Use strict on bench.pl. + * etc/bench.pl.in (&run, &generate_grammar): New. + Rename the grammar generating functions for consistency. + Change the interface so that the list of benches to run is passed + as (optionless) arguments. + (&compile): Use &run. + +2008-11-04 Akim Demaille + + Remove spurious initial empty lines. + * data/glr.c, data/glr.cc, data/lalr1.cc, data/lalr1.java, + * data/yacc.c: End the @output lines with an @. + +2008-11-04 Akim Demaille + + Improve the display of sizes. + * etc/bench.p.in: Higher precision. + Sort by decreasing size. + +2008-11-04 Akim Demaille + + Don't memcpy C++ structures. + * data/lalr1-fusion.cc (b4_symbol_variant): Adjust additional + arguments. + (variant::build): New overload for + copy-construction-that-destroys. + (variant::swap): New. + (parser::yypush_): Use it in variant mode. + +2008-11-04 Akim Demaille + + Better defaults for bench.pl. + * etc/bench.pl.in ($verbose, $cflags, $iterations): Change the + default values. + Adjust &verbose uses. + (-q, --quiet): New. + +2008-11-04 Akim Demaille + + Make variant.yy more complex. + std::list cannot be copied via memcpy, they are more demanding than + std::string. Use one std::list to strengthen the test. + + * examples/variant.yy: Use lalr1-fusion.cc, not lalr1.cc. + Adjust. + Create a list of strings, instead of a single large string. + +2008-11-04 Akim Demaille + + bench.pl --bench. + * etc/bench.pl.in (--bench, $bench): New. + +2008-11-04 Akim Demaille + + Sort methods. + * data/lalr1-fusion.cc (destroy): Use as() in its definition. + Define it after as(). + +2008-11-04 Akim Demaille + + Useless parens. + * data/lalr1-fusion.cc (b4_rhs_location): Remove useless parens. + +2008-11-04 Akim Demaille + + Issue missing synclines after user actions. + * data/c.m4 (b4_case): Issue synclines on the output file. + +2008-11-04 Akim Demaille + + Remove trailing empty line. + * data/lalr1-fusion.cc: Don't add an empty line after the user's + epilogue. + +2008-11-04 Akim Demaille + + Fix output of copyright years. + * data/bison.m4 (b4_copyright): Fix the indentation of the + copyright year paragraph. + Use b4_copyright_years when no years are given. + * data/lalr1.cc, data/lalr1-fusion.cc, data/location.cc + (b4_copyright_years): New. + Use it. + +2008-11-04 Akim Demaille + + Avoid the spurious initial empty line. + * data/lalr1-fusion.cc, data/location.cc: Put a trailing "@" at + the end of @output request to suppress the empty line that + results. + +2008-11-04 Akim Demaille + + Remove parser::rhs_number_type. + * data/lalr1-fusion.cc (rhs_number_type): No longer define it. + (yyrhs_): Use b4_table_define. + +2008-11-04 Akim Demaille + + Fix iteration type. + * data/lalr1-fusion.cc: Use an int to iterate up to an int. + +2008-11-04 Akim Demaille + + Factor the declaration of the integer tables. + * data/lalr1-fusion.cc (b4_table_define): New. + Use it. + +2008-11-03 Akim Demaille + + Fix indentation of tables in lalr1.cc + * data/lalr1-fusion.cc: Fix the indentation. + +2008-11-03 Akim Demaille + + Destroy the lhs symbols after reduction. + * data/lalr1-fusion.cc (parse): After the user action, when in + variant mode, destroy the lhs symbols. + +2008-11-03 Akim Demaille + + Simplify yysyntax_error_ use. + * data/lalr1-fusion.cc (yysyntax_error_): Always pass it the token + type, but make it unnamed in the declaration when it is not used. + +2008-11-03 Akim Demaille + + Let yy::variant::build return an lvalue. + * data/lalr1-fusion.cc (variant::build): Return a reference to the + object. + +2008-11-03 Akim Demaille + + Define yy::variant only when needed. + * data/lalr1-fusion.cc (yy::variant): Define only if variants are + used. + +2008-11-03 Akim Demaille + + Bench the three-stack lalr1.cc. + * etc/bench.pl.in: Bench the three-stack lalr1.cc vs. the + one-stack one. + +2008-11-03 Akim Demaille + + Fail on parse error in calc++. + * doc/bison.texinfo (calc++.cc): Propagate failures to the exit + status. + * examples/calc++/test ($me, $number, $exit, run): New. + Use them to propagate errors to the exit status. + +2008-11-03 Akim Demaille + + Don't specify the skeleton twice in the example. + * examples/calc++/Makefile.am: Don't pass -S to Bison, the grammar + file does what is needed. + +2008-11-03 Akim Demaille + + bench: Improve output. + * etc/bench.pl.in (bench_grammar): Tune the printf format. + +2008-11-03 Akim Demaille + + bench: check impact of %debug on variants. + * etc/bench.pl.in (variant_grammar): Fix the computation of + $variant. + Generate a grammar file that can work with or without %debug. + Do use the @directive. + (bench_variant_parser): Check impact of %debug. + (@directives): Rename all the occurrences to... + (@directive): this, for consistency. + +2008-11-03 Akim Demaille + + bench: report the size too. + * etc/bench.pl.in ($iterations): Defaults to -3. + (&bench_grammar): Require hireswallclock. + Compute and display the size of the result. + More comments. + +2008-11-03 Akim Demaille + + bench: More use of the verbosity level. + * etc/bench.pl.in ($verbose, &verbose): New. + Use them. + More POD documentation. + +2008-11-03 Akim Demaille + + bench.pl: a command line interface + * etc/bench.pl.in: More doc. + Some fixes in the documentation. + ($cflags, $iterations, &help, &getopt): New. + Use them. + (&variant_grammar): Let the number of stages be 10 times what is + specified. + +2008-11-03 Akim Demaille + + Bench the use of Boost.Variants. + * etc/bench.pl.in ($cxx, &variant_grammar, &bench_variant_parser): + New. + (&compile): Be ready to compile C++ parsers. + (&bench_push_parser): Move debug information to the outermost + level. + * THANKS: Add Michiel De Wilde. + +2008-11-03 Akim Demaille + + bench.pl: Pass directives as a list instead of as a string. + * etc/bench.pl.in (&directives): New. + (&triangular_grammar, &calc_grammar): Use it to format the Bison + directives. + (&triangular_grammar): Do use the directives (were ignored). + (&bench_grammar, &bench_push_parser): Adjust to pass lists of + directives. + +2008-11-03 Akim Demaille + + Improve genericity of bench.pl. + * etc/bench.pl.in (&bench_grammar): Take the set of benches as + argument. + (&bench_push_parser): New. + Call it. + +2008-11-03 Akim Demaille + + Add documentation to bench.pl. + * etc/bench.pl.in: Comment changes. + +2008-11-03 Akim Demaille + + Fuse the three stacks into a single one. + 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 + + 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 + + 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 + + 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 + + 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 + + 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 + + Prepare easier M4 changes. + * data/lalr1.cc: Use escaped [] instead of literals to prepare + future changes. + +2008-11-02 Joel E. Denny + + Initiate further development. + * NEWS: Create an empty section for new entries. + * gnulib: Update submodule to HEAD. + +2008-11-02 Joel E. Denny + + * NEWS: Version 2.4. + +2008-11-02 Joel E. Denny + + 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 + + Say %language is experimental. + We're thinking of extending it's effect on output file naming. See the + thread at + . + * 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 + Paolo Bonzini + + 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 + + * 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 + + 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 + + * gnulib: Update submodule to HEAD. + +2008-10-28 Joel E. Denny + + Update copyright year. + * src/files.c: Here. + +2008-10-28 Di-an Jan (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 + + Space changes. + * data/lalr1.cc: Formatting changes. + +2008-10-28 Akim Demaille + + 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 + + Prefer "continue" for empty loop bodies. + * etc/bench.pl.in: Use "continue" instead of {}. + +2008-10-28 Akim Demaille + + 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 + + Make gnulib a submodule. + * gnulib: New. + * .gitmodules (gnulib): New. + +2008-10-18 Joel E. Denny + + Fix yyerror_range for user-defined location type in C++. Reported by + Georg Sauthoff at + . + * data/lalr1.cc (parse): Change type of yyerror_range to location_type. + * THANKS (Georg Sauthoff): Add. + +2008-10-18 Joel E. Denny + + 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 (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 + + 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 + + * README: Update FAQ pointer. + Reported by Joel E. Denny. + +2008-08-27 Eric Blake + + 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 + + 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 + + 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 + + For maintainer-check*, don't recompile for a $(VERSION) update. + * cfg.mk: New file. + (_is-dist-target): Override the one in GNUmakefile. + * Makefile.am (EXTRA_DIST): Add cfg.mk. + +2008-08-26 Joel E. Denny + + Update for recent change to gnulib. + * src/parse-gram.y: Don't include strverscmp.h. It comes from + string.h now. + +2008-08-15 Eric Blake + + Remaining m4sugar merge from autoconf. + * data/m4sugar/m4sugar.m4: Copy entire file from autoconf. + * data/m4sugar/foreach.m4: New file, copied from autoconf. + * data/Makefile.am (dist_m4sugar_DATA): Distribute it. + * src/output.c (output_skeleton): Tell m4 how to find it. + + Partial m4sugar merge from autoconf: m4_map. + * data/m4sugar/m4sugar.m4 (m4_fst): Delete. + (m4_map, m4_map_sep, _m4_map): Rewrite more efficiently. + (m4_apply, _m4_apply, m4_mapall, m4_mapall_sep): New macros. + * data/java.m4 (b4_token_enums): Use more efficient short-circuit + for empty list. + * data/c.m4 (b4_token_defines, b4_token_enums, b4_c_ansi_formals): + Likewise. + (b4_parse_param_for): Avoid m4_fst, now that autoconf no longer + declares it. + +2008-08-07 Joel E. Denny + + Keep .version and PACKAGE_VERSION in sync. + * Makefile.am ($(top_srcdir)/.version): Declare configure as a + dependency, and add comments justifying this in more detail. Discussed + starting at + . + +2008-08-06 Eric Blake + + 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 + + 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 + + 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 + + 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 + . + +2008-07-31 Paolo Bonzini + + * NEWS: Clarify documentation of %language. + +2008-07-31 Paolo Bonzini + + 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 + + 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 + + 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 + + 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 + + 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 + + Fix untranslatable composition of sentences. Reported by Goran + Uddeborg at + . + * 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 + + 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 + + Improve forward-compatibility with GNU M4. Reported by Eric Blake at + . + * 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 + + 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 + + * NEWS (2.3b+): New section, empty for now. + * configure.ac (AC_INIT): 2.3b -> 2.3b+. + 2008-05-27 Joel E. Denny * NEWS (2.3b): Update release date since there has been a delay in @@ -20532,5 +21899,3 @@ Copying and distribution of this file, with or without modification, are permitted provided the copyright notice and this notice are preserved. - -$Id$