X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/d6fb461dd8b8ce881af052e4d8b5cfc4e8c2178b..77373efad24be4ed77391c9e8ab2f85285810311:/ChangeLog diff --git a/ChangeLog b/ChangeLog index ec760d69..1da6ea6f 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,1214 @@ +2009-08-25 Joel E. Denny + + Some code and documentation improvements. + * data/c.m4 (b4_table_value_equals): New macro to capture + some repeated code. + * data/glr.c (yyis_pact_ninf): Use it here. + (yyis_table_ninf): Likewise. + (yyreportSyntaxError): Improve internal comments. + * data/yacc.c (yyis_pact_ninf): New macro copied from glr.c. + Use it everywhere possible. + (yyis_table_ninf): Likewise. + (yysyntax_error): Improve internal comments. + * data/lalr1.cc (yysyntax_error_): Likewise. + * data/lalr1.java (yysyntax_error): Likewise. + * src/tables.h: Improve comments about yypact, yytable, etc. + +2009-08-21 Joel E. Denny + + Use locale when quoting. + * src/scan-gram.l (SC_ESCAPED_STRING, SC_ESCAPED_CHARACTER): Use + quote rather than implementing quoting here. + +2009-08-20 Eric Blake + + Make previous patch more robust. + * src/output.c (ARRAY_CARDINALITY): New macro, copied from + argmatch.h. + (output_skeleton): Use it. + Suggested by Akim Demaille. + + Import latest m4/m4.m4. + * submodules/autoconf: Update to autoconf 2.64. + * configure.ac (M4_GNU_OPTION): New define. + * src/output.c (output_skeleton): Use it to resolve FIXME. + * NEWS: Mention this. + +2009-08-19 Joel E. Denny + + Fix complaints about escape sequences. + Discussed starting at + . + * src/scan-gram.l (SC_ESCAPED_STRING, SC_ESCAPED_CHARACTER): + For a \0 and similar escape sequences meaning the null + character, report an invalid escape sequence instead of an + invalid null character because the latter does not actually + appear in the user's input. + In all escape sequence complaints, don't escape the initial + backslash, and don't quote when the sequence appears at the end + of the complaint line unless there's whitespace that quotearg + won't escape. + Consistently say "invalid" not "unrecognized". + Consistently prefer "empty character literal" over "extra + characters in character literal" warning for invalid escape + sequences; that is, consistently discard those sequences. + * tests/input.at (Bad escapes in literals): New. + +2009-08-19 Akim Demaille + + doc: fixes. + * doc/bison.texinfo: Fix minor Texinfo errors. + +2009-08-19 Akim Demaille + + doc: %initial-action to initialize yylloc. + Reported by Bill Allombert. + * doc/bison.texinfo: Set fill-column to 76. + (Location Type): Document the use of %initial-action to initialize + yylloc. + +2009-08-18 Joel E. Denny + + maint: update for gnulib's recent update-copyright changes + * gnulib: Update. + * .x-update-copyright (COPYING): Add as it's no longer implied + when .x-update-copyright is present. + * cfg.mk (update-copyright-local): Remove, now ignored. + (update-copyright): Declare update-b4-copyright as a dependency. + +2009-08-17 Akim Demaille + + build: require gettext 0.17. + + Suggested by Bruno Haible. + http://lists.gnu.org/archive/html/bug-bison/2009-08/msg00009.html + * configure.ac: require gettext 0.17 to ensure compatibility with + gnulib. + +2009-08-17 Akim Demaille + + build: lower gettext requirements. + + Bison was uselessly requiring the formatstring macros from + gettext, which resulted in mo files not being installed on systems + that perfectly supported Bison mo files. Lower the requirement. + http://lists.gnu.org/archive/html/bug-bison/2009-08/msg00006.html + + * configure.ac: Require need-ngettext instead of + need-formatstring-macros. + Reported by Martin Jabocs. + Suggested by Bruno Haible. + * INSTALL: Restructure. + (Internationalization): New. + +2009-08-14 Joel E. Denny + + maint: fix use of copyright year intervals. + * gnulib: Update. + * bootstrap.conf (gnulib_modules): Update getopt to getopt-gnu + as now recommended in gnulib/NEWS. + * build-aux/update-b4-copyright: Fix. + * cfg.mk (update-copyright-env): Configure update-copyright. + +2009-08-13 Joel E. Denny + + Make it easier to write deterministic tests. + Continues Akim's work from his 2009-06-10 commits. + * src/reader.c (check_and_convert_grammar): Don't add any + symbols after the first symbols_do invocation. + * src/symtab.c (symbols_sorted): New static global. + (user_token_number_redeclaration): Update comments. + (symbol_from_uniqstr): If a new symbol is being created, assert + that symbols_sorted hasn't been allocated yet. + (symbols_free): Free symbols_sorted. + (symbols_cmp, symbols_cmp_qsort): New functions. + (symbols_do): Sort symbol_table into symbols_sorted on first + invocation. + * tests/input.at (Numbered tokens): Recombine tests now that the + output should be deterministic across multiple numbers. + +2009-08-12 Akim Demaille + + distcheck: fix. + + * examples/calc++/Makefile.am: (EXTRA_DIST): Ship calc.stamp. + +2009-08-10 Joel E. Denny + + * tests/Makefile.am (TESTSUITE_AT): Add named-refs.at. + +2009-08-10 Joel E. Denny + + Miscellaneous code readability improvements. + + * src/reader.c (reader): Move %define front-end variable + defaults and checking into... + (prepare_percent_define_front_end_variables): ... this new + function. + + * src/scan-gram.l (INITIAL): For consistency with string + literals, don't store open quote on character literal. It's + discarded before returning anyway. + (SC_ESCAPED_CHARACTER): Similarly, don't store close quote. + Make length test more readable, and make the character stored + for an empty literal more obvious while consistent with the + previous behavior. + + * src/symtab.c, src/symtab.h: Rename USER_NUMBER_ALIAS to + USER_NUMBER_HAS_STRING_ALIAS throughout. + * src/symtab.c (symbol_make_alias): Remove comment from symtab.c + that is repeated in symtab.h. Improve argument names to make it + clear which side of the symbol-string alias pair is which. + (symbol_check_alias_consistency): Improve local variable names + for the same purpose. + * src/symtab.h (struct symbol): Make comments about aliases + clearer. + (symbol_make_alias): Improve comments and argument name. + * src/output.c (token_definitions_output): Update for rename to + USER_NUMBER_HAS_STRING_ALIAS and improve comments about aliases. + +2009-08-08 Alex Rozenman + + Convert "misleading reference" messages to warnings. + * src/scan-code.l: New function 'show_sub_messages', more + factoring. + * tests/named-ref.at: Adjust tests. + +2009-08-06 Joel E. Denny + + maint: run "make update-copyright" + +2009-08-06 Joel E. Denny + + maint: make update-b4-copyright easier to use + * build-aux/update-b4-copyright: In warnings, report line + numbers rather than character positions. + * cfg.mk (update-copyright-local): Set to update-b4-copyright so + that update-copyright runs it. + * gnulib: Update. + +2009-08-05 Joel E. Denny + + maint: clean up update-b4-copyright code + * build-aux/update-b4-copyright: Do not accept 2-digit + UPDATE_COPYRIGHT_YEAR, which was not handled correctly. + Don't accept a `[' in a b4_copyright argument. + Format code more consistently. + Don't assume b4*copyright never occurs. + +2009-08-04 Joel E. Denny + + maint: automate b4_copyright updates. + * Makefile.am (update-b4-copyright): New target rule. + * build-aux/Makefile.am (EXTRA_DIST): Add update-b4-copyright. + * build-aux/update-b4-copyright: New. + * data/yacc.c: Remove stray characters around b4_copyright + invocations. + +2009-08-04 Joel E. Denny + + maint: automate annual package-wide copyright-year update. + * .x-update-copyright: New. + * Makefile.am (EXTRA_DIST): Remove maint.mk. + * bootstrap.conf (gnulib_modules): Add maintainer-makefile and + update-copyright. Remove gnumakefile, which is implied by + maintainer-makefile. + * cfg.mk (bootstrap-tools): Copy from old maint.mk. + * gnulib: Update. + * maint.mk: Remove, now copied from gnulib. + * examples/extexi: Add missing "(C)" in copyright statement so + update-copyright can recognize it. + * src/LR0.h: Likewise. + * src/print.h: Likewise. + * src/print_graph.h: Likewise. + * src/gram.c: Add missing comma in copyright statement. + * src/gram.h: Likewise. + +2009-08-04 Joel E. Denny + + Fix "make distcheck". + * examples/calc++/Makefile.am: Say $(srcdir)/calc.stamp instead + of just calc.stamp. + +2009-08-01 Joel E. Denny + + Pacify "gcc -Wunused" for the input function from Flex. + Reported by Alex Rozenman. This warning shows up with gcc-4.3.0 + and later. + * src/scan-code.l: Add "%option noinput", which I cannot find in + the Flex manual, but which Flex has supported since at least as + far back as 2.5.4. However, if any of our developers still use + Flex 2.5.4, they'll need to stop configuring with + --enable-gcc-warnings because "%option noinput" didn't work + correctly until Flex 2.5.6. + * src/scan-gram.l: Likewise. + * src/scan-skel.l: Likewise. + +2009-07-31 Alex Rozenman + + Fix --enable-gcc-warnings problems. + * src/reader.c: Adjust variable names. + * src/scan-code.l: Fix prototypes and adjust names. + * src/named-ref.c: Remove redundant "if". + +2009-07-29 Joel E. Denny + + Fix a --enable-gcc-warnings problem. + * src/scan-gram.l (SC_ESCAPED_CHARACTER): Actually use length + variable. + +2009-07-24 Alex Rozenman + + Fix some memory leaks. + * src/named-ref.c: Add a pointer check (named_ref_free). + * src/scan-code.l: New function (variant_table_free). Called in + code_scanner_free. + * src/symlist.c: Call to named_ref_free (symbol_list_free). + +2009-07-24 Joel E. Denny + + Warn about character literals not of length one. + * NEWS (2.5): Document. + * src/scan-gram.l (INITIAL): Remove comment that we don't check + the length. + (SC_ESCAPED_CHARACTER): Warn if length is wrong. + * tests/input.at (Bad character literals): New test group. + +2009-07-24 Joel E. Denny + + * src/lalr.c (state_lookahead_tokens_count): Correct comment. + +2009-07-22 Joel E. Denny + + Some M4 cleanup in the testsuite. + Suggested by Eric Blake at + . + * tests/existing.at (_AT_TEST_EXISTING_GRAMMAR): Do not + complicate the code by distinguishing between a missing value + and an empty string value for an optional argument. This fix is + allowed by the similar fix in AT_TEST_TABLES_AND_PARSE below. + * tests/local.at (_AT_TEST_TABLES_AND_PARSE): Merge into... + (AT_TEST_TABLES_AND_PARSE): ... this now that the special + arguments are not needed because of the following changes. + Fix stale comments. + Bison developers should use GNU M4 and should not use + POSIXLY_CORRECT when building the test suite, so do not + complicate the code by avoiding $10 and above. + Do not quote an empty string value for an optional argument, and + do not distinguish between a missing value and an empty string + value. + +2009-07-21 Joel E. Denny + + * m4/m4.m4: Make it a sym link to submodules/autoconf/m4/m4.m4. + +2009-07-15 Joel E. Denny + + Revert unnecessary column realignment in --help output. + Reported by Akim Demaille at + . + * src/getargs.c (usage): Here. + +2009-07-04 Alex Rozenman + + Alphabetical order in src/Makefile.am. + * src/Makefile.am: Adjust. + +2009-07-04 Alex Rozenman + + Style changes and factoring. + * src/named-ref.h: Add comments. + * src/parse-gram.y: Readability and style changes. + * src/reader.c: Factoring: assign_named_ref function. + * src/scan-code.l: Factoring and style changes. Rename + parse_named_ref to parse_ref. Use "c-ctype.h" from gnulib. + Use "unsigned" type for variant index. Improve readablity. + * src/scan-gram.l: Change error messages and add comments. + * src/symlist.h: symbol_list_null: New function decl. + * src/symlist.c: symbol_list_null: Implement here. + * tests/named-refs.at: Adjust for new error messages. + +2009-06-29 Eric Blake + + scan-code: avoid compiler warnings + * src/scan-code.l (parse_named_ref): Use correct specifiers. + +2009-06-29 Akim Demaille + + build: avoid concurrent extraction of calc++. + * examples/calc++/Makefile.am (calc.stamp): New. + Depend on it to create the sources of calc++ so that concurrent + builds don't launch several "extexi" in parallel. + Not only this is inefficient, this also builds incorrect sources + with several extractions mixed together. + +2009-06-27 Alex Rozenman + + Implement support for named symbol references. + * src/parse-gram.y: Add new syntax (named_ref.opt). + * src/reader.c: Store named refs in symbol lists. + * src/reader.h: New argument for symbol_append and + action_append functions. + * src/scan-code.h: Add new field (named_ref) into + code_props data structure. Keeps named ref of midrule + actions. + * src/scan-code.l: Support for named refs in semantic + action code. New function 'parse_named_ref'. + * src/scan-gram.l: Support bracketed id. + * src/symlist.c: Store named refs in symbol lists. + * src/symlist.h: New field in symbol list: named_ref. + * src/named-ref.h: New file, a struct for named_ref. + * src/named-ref.cp: New file, named_ref_new function. + * src/local.mk: Add two new files. + * tests/testsuite.at: Include new test group: + * tests/named-refs.at: this new file. + +2009-06-25 Akim Demaille + + hash: check insertion for memory exhaustion. + * src/uniqstr.c (uniqstr_new): New. + +2009-06-11 Akim Demaille + + style changes. + * data/xslt/xml2dot.xsl, data/xslt/xml2xhtml.xsl: Space changes. + * src/print-xml.c: Style changes. + * tests/conflicts.at: Comment changes. + +2009-06-11 Akim Demaille + + xml: beware of user strings used to give a %prec to rules. + * tests/conflicts.at (%prec with user strings): New. + * src/gram.c (grammar_rules_print_xml): Escape the precedence for + XML output. + +2009-06-11 Akim Demaille + + hash: check insertion for memory exhaustion. + * src/muscle-tab.c (muscle_insert, muscle_grow) + * src/state.c (state_hash_insert): Check the return value of + hash_insert. + +2009-06-10 Akim Demaille + + deterministic test suite. + Some consistency checks on symbols are performed after all the + symbols were read, by an iteration over the symbol table. This + traversal is nondeterministic, which can be a problem for test + cases. + Avoid this. + Addresses another form of nondeterminism reported by Joel E. Denny. + http://lists.gnu.org/archive/html/bison-patches/2009-05/msg00023.html + + * tests/input.at (Numbered tokens): Split the hexadecimal/decimal + test in two. + Use different file names for the three tests to make the + maintenance easier. + +2009-06-10 Akim Demaille + + deterministic user-token-number redeclaration errors. + Address nondeterminism reported by Joel E. Denny. + http://lists.gnu.org/archive/html/bison-patches/2009-05/msg00023.html + + * src/uniqstr.h: Comment changes. + * src/location.h (boundary_cmp, location_cmp): New. + * src/symtab.c (user_token_number_redeclaration): New. + (symbol_translation): Use it. + * tests/input.at (Numbered tokens): Adjust the expected output. + +2009-05-25 Akim Demaille + + gnulib: update. + * gnulib: Update to latest. + * lib/.cvsignore, lib/.gitignore, m4/.cvsignore, + * m4/.gitignore: Regen. + * src/symtab.c (symbol_from_uniqstr, semantic_type_from_uniqstr): + Call xalloc_die on hash_insert failures. + Requested by the new __warn_unused_result__ attribute of + hash_insert. + +2009-05-22 Joel E. Denny + + Convert multiple variable definition warnings to complaints. + * NEWS (2.5): Add a new entry for that change. + * doc/bison.texinfo (Decl Summary): Update %define entry. + (Bison Options): Update -D/--define/-F/--force-define entry. + * src/muscle_tab.c (muscle_percent_define_insert): Implement. + * src/muscle_tab.h (muscle_percent_define_insert): Update + comments. + * tests/input.at (`%define errors'): Update. + (`%define, --define, --force-define'): Update. + +2009-05-22 Joel E. Denny + + -F/--force-define and relative %define/-D/--define priorities. + * NEWS (2.5): Add documentation to -D/--define entry. + * build-aux/cross-options.pl: Hard-code association of + --force-define with %define. + * doc/bison.texinfo (Decl Summary): In %define entry, + cross-reference command-line options. + (Bison Options): Add documentation to -D/--define entry. + (Option Cross Key): Widen column for --force-define row. + * src/getargs.c (usage): Document -F/--force-define. Realign + options in output. + (short_options, long_options, getargs): Parse -F/--force-define, + and update muscle_percent_define_insert invocation. + * src/muscle_tab.h (muscle_percent_define_how): New enum type. + (muscle_percent_define_insert): Add argument with that type. + * src/muscle_tab.c (muscle_percent_define_insert): Implement + -F/--force-define behavior and priorities. + * src/parse-gram.y (prologue_declaration): Update + muscle_percent_define_insert invocations. + * tests/input.at (`%define, --define'): Rename to... + (`%define, --define, --force-define'): ... this and extend. + +2009-05-22 Joel E. Denny + + Update some comments to make sense for -D. + * data/bison.m4 (b4_check_user_names): In header comments, say + "user occurrence" instead of "grammar occurrence". + * src/muscle_tab.h (muscle_percent_define_insert): Likewise. + (muscle_percent_code_grow): Likewise just for consistency. + +2009-05-22 Joel E. Denny + + * data/c++.m4: Update copyright year. + +2009-05-20 Joel E. Denny + + * data/c++.m4 (b4_namespace_close): Simplify slightly. + +2009-05-19 Joel E. Denny + + Handle a trailing `:' in a user-supplied C++ namespace better. + * data/c++.m4 (b4_namespace_close): Don't let it be printed + among the closing braces here. This fix might make the + generated code easier to debug, but otherwise it should be + insignificant because a trailing `:' is a C++ error already. + +2009-05-19 Akim Demaille + + remove useless variable. + * src/getargs.c (skeleton_arg): Remove now useless variable. + Should help the compiler see that this printf-like call is sane. + +2009-05-11 Akim Demaille + + doc: use C++ headers. + * doc/bison.texinfo (Calc++ Scanner): Prefer C++ headers to C + headers. + +2009-05-05 Akim Demaille + + fix hexadecimal token number support. + * src/scan-gram.l: Catch incorrect ids after hexadecimal numbers. + +2009-05-05 Akim Demaille + + tests: check token numbers. + * tests/input.at (Numbered tokens): New. + +2009-05-04 Akim Demaille + + bison: catch bad symbol names. + * src/scan-gram.l({int}{id}): Report as an invalid identifier. + * tests/input.at: Adjust. + +2009-05-04 Akim Demaille + + space changes. + * src/scan-gram.l: Untabify to be robust to zealous editors. + +2009-05-04 Akim Demaille + + identifiers: dashes are letters. + Dashes can now start identifiers (symbols and directives). + + * src/scan-gram.l ({letter}): Add dash. + ({id}): Remove it. + * tests/input.at (Symbols): Adjust. + Remove stray comment. + * tests/regression.at (Invalid inputs): Adjust error message. + * doc/bison.texinfo (Symbols): Update. + +2009-05-01 Joel E. Denny + + Declare %code to be a permanent feature. + * NEWS (2.4.2): Here. + * doc/bison.texinfo (Prologue Alternatives): Don't say it's + experimental. + (Decl Summary): Likewise. + +2009-04-30 Joel E. Denny + + Convert underscores to dashes in some %define variable names. + For now, just api.push-pull and lr.keep-unreachable-states. + Maintain old names for backward compatibility. + * NEWS (2.5): Document. + * data/c.m4 (b4_identification): Update comment. + * data/yacc.c: Update access. + * doc/bison.texinfo: Update. + * etc/bench.pl.in (bench_grammar): Update use. + * src/files.c (tr): Move to... + * src/getargs.c, src/getargs.h (tr): ... here because I can't + think of a better place to expose it. My logic is that, for all + uses of tr so far, command-line arguments can be involved, and + getargs.h is already included. + * src/main.c (main): Update access. + * src/muscle_tab.c (muscle_percent_define_insert): Convert old + variable names to new variable names before assigning value. + * src/reader.c (reader): Update setting default. + * tests/calc.at: Update uses. + * tests/conflicts.at (Unreachable States After Conflict + Resolution): Update use. + * tests/input.at (%define enum variables): Update use. + (%define backward compatibility): New test group. + * tests/push.at: Update uses. + * tests/reduce.at: Update uses. + * tests/torture.at: Update uses. + +2009-04-30 Joel E. Denny + + Set all front-end %define defaults in one place. + * src/main.c (main): Move lr.keep_unreachable_states default... + * src/reader.c (reader): ... to here. + +2009-04-29 Joel E. Denny + + Rename lr.default_reductions to lr.default-reductions. + * NEWS (2.5): Here. + * doc/bison.texinfo: Here. + * src/lalr.c (initialize_LA): Here. + * src/print.c (print_reductions): Here. + * src/reader.c (reader): Here. + * src/tables.c (action_row): Here. + * tests/input.at (%define enum variables): Here. + * tests/reduce.at (AT_TEST_LR_DEFAULT_REDUCTIONS): Here. + +2009-04-29 Joel E. Denny + + Pacify ./configure --enable-gcc-warnings. + * tests/input.at (Symbols): Prototype yyerror and yylex. + +2009-04-21 Akim Demaille + + tests: check the use of dashes and periods in symbols. + * tests/input.at (Symbol): New test group. + +2009-04-29 Joel E. Denny + + Document how `%define "var" "value"' is not M4-friendly. + * src/parse-gram.y (variable): In comments here. + +2009-04-29 Joel E. Denny + + Add copyright updates missed during previous cherry pick. + * src/output.c: Here. + * src/parse-gram.y: Here. + * src/scan-gram.l: Here. + +2009-04-20 Akim Demaille + + variables: accept dashes. + * src/scan-gram.l ({id}): Also accept dashes after the initial + letter. + ({directive}): Use {id}. + * src/parse-gram.y: Comment and formatting changes. + * doc/bison.texinfo (Symbols): Adjust the lexical definitions of + symbols. + * src/complain.h, src/complain.c (yacc_at): New. + * src/symtab.c (symbol_new): Use yacc_at to report inappropriate + symbol names. + * src/output.c (token_definitions_output): Do not #define token + names with dashes. + +2009-04-24 Joel E. Denny + + Clean up recent patches a little. + Reported by Akim Demaille. + * doc/bison.texinfo (Understanding): Fix typos. + * src/print.c (print_reductions): Don't use negated variable. + +2009-04-24 Joel E. Denny + + List accepted values for a %define enum variable with an invalid value. + Suggested by Akim Demaille at + . + * data/bison.m4 (_b4_percent_define_check_values): Implement. + * src/muscle_tab.c (muscle_percent_define_check_values): Implement. + * tests/input.at (%define lr.default_reductions invalid values): Merge + into... + (%define enum variables): ... here, and update output. + +2009-04-23 Joel E. Denny + + Rename "default rule" to "default reduction". + This includes changing variable names in code, changing + comments, and renaming %define lr.default_rules to %define + lr.default_reductions. + * NEWS (2.5): Update IELR documentation. + * data/glr.c, data/lalr1.cc, data/lalr1.java, data/yacc.c: + Adjust YYDEFACT and yydefact_ documentation. + * doc/bison.texinfo (Decl Summary): Adjust lr.default_reductions + and lr.type documentation. Make some other wording + improvements. + (Glossary): Adjust cross-references and Default Reduction + definition. + * src/lalr.c (state_lookahead_tokens_count): Adjust code. + Remove a confusing comment pointed out by Akim Demaille. + (initialize_LA): Adjust code. + * src/print-xml.c (print_reductions): Adjust code. + * src/print.c (print_reductions): Adjust code. + * src/reader.c (reader): Adjust code. + * src/tables.c (action_row): Adjust code. + (token_actions): Adjust code. + * src/tables.h: Adjust YYDEFACT documentation. + * tests/input.at (%define lr.default_rules invalid values): + Rename test group to... + (%define lr.default_reductions invalid values): ... this, and + update grammar file and expected output. + * tests/reduce.at (AT_TEST_LR_DEFAULT_RULES): Rename to... + (AT_TEST_LR_DEFAULT_REDUCTIONS): ... this, and update. + +2009-04-21 Joel E. Denny + + Document %define lr.type and lr.default_rules. + * NEWS (2.5): Add an entry. + * src/getargs.c (usage): Mention IELR(1) and canonical LR(1) + besides just LALR(1) and GLR(1). + * doc/bison.texinfo (Introduction): Likewise. + (Language and Grammar): Bison is no longer limited to LALR(1) + restrictions. + (GLR parsing): Say deterministic or LR(1) rather than LALR(1) + when trying to distinguish from GLR. Talk about LR(1) grammars + rather than LALR(1) grammars. + (Decl Summary): In %define api.push_pull entry, say it applies + to deterministic parsers in C rather than LALR(1) parsers in C. + Add lr.default_rules entry. + Add lr.type entry. + (Mystery Conflicts): Bison is no longer limited to LALR(1) + restrictions. + (Generalized LR Parsing): Same changes as for the previous GLR + section. + (Memory Management): Say deterministic rather than LALR(1). + (Understanding): Correct some bison output. + Index discussion of "accepting state". + Say deterministic rather than LALR(1). + (Bison Options): In --yacc entry, say deterministic rather than + LALR(1). + In --report, --graph, and --xml entries, just don't mention + LALR(1). + (C++ Parsers): Say deterministic rather than LALR(1). + (Table of Symbols): Likewise in YYSTACK_USE_ALLOCA entry. + (Glossary): Add Accepting State, Consistent State, Default Rule, + and IELR(1) definitions. + In Generalized LR (GLR) definition, make same changes as in + previous GLR sections. + In LALR(1) definition, say Bison uses LALR(1) by default rather + than implying Bison is limited to LALR(1). + (LocalWords): Add IELR. + +2009-04-21 Joel E. Denny + + Finish implementing %define lr.type. + Its value can be "LALR", "IELR", or "canonical LR". + * lib/timevar.def (TV_IELR_PHASE1): New var. + (TV_IELR_PHASE2): New var. + (TV_IELR_PHASE3): New var. + (TV_IELR_PHASE4): New var. + * src/Makefile.am (bison_SOURCES): Add AnnotationList.c, + AnnotationList.h, InadequacyList.c, InadequacyList.h, Sbitset.c, + Sbitset.h, ielr.h, and ielr.c. + * src/getargs.h, src/getargs.c (enum trace, trace_args, + trace_types): Add trace_ielr. + * src/lalr.h, src/lalr.c (ngotos): Export it. + (F): Rename to... + (goto_follows): ... this, update all uses, and export it. + (set_goto_map): Export it. + (map_goto): Export it. + (compute_lookahead_tokens): Don't free goto_follows yet. Now + handled in ielr. + (initialize_LA): Export it. Move lookback allocation to... + (lalr): ... here because, for canonical LR, initialize_LA must + be invoked but lookback and much of the rest of LALR isn't + needed. + * main.c (main): Instead of lalr, invoke ielr, which invokes + lalr. + * src/reader.c (reader): Default lr.type to "LALR". + Default lr.default_rules to "accepting" if lr.type is "canonical + LR". Leave the default as "all" otherwise. + Check for a valid lr.type value. + * src/state.h, src/state.c (struct state_list): Add state_list + member. + (state_new): Initialize state_list member to NULL. + (state_new_isocore): New function, exported. + * tests/existing.at (AT_TEST_EXISTING_GRAMMAR): New macro that + exercises all values of lr.type. + (GNU AWK Grammar): Rename test group to... + (GNU AWK 3.1.0 Grammar): ... this, and extend to use + AT_TEST_EXISTING_GRAMMAR. + (GNU Cim Grammar): Extend to use AT_TEST_EXISTING_GRAMMAR. + (GNU pic Grammar): Rename test group to... + (GNU pic (Groff 1.18.1) Grammar): ... this, and extend to use + AT_TEST_EXISTING_GRAMMAR. + * tests/reduce.at (AT_TEST_LR_TYPE): New macro that exercises + all values of lr.type. + (Single State Split): New test groups using AT_TEST_LR_TYPE. + (Lane Split): Likewise. + (Complex Lane Split): Likewise. + (Split During Added Lookahead Propagation): Likewise. + +2009-04-21 Joel E. Denny + + Add new files for IELR and canonical LR implementation. + * src/AnnotationList.c: New. + * src/AnnotationList.h: New. + * src/InadequacyList.c: New. + * src/InadequacyList.h: New. + * src/Sbitset.c: New. + * src/Sbitset.h: New. + * src/ielr.c: New. + * src/ielr.h: New. + +2009-04-20 Joel E. Denny + + Implement %define lr.default_rules. + Its value describes the states that are permitted to contain + default rules: "all", "consistent", or "accepting". + * src/reader.c (reader): Default lr.default_rules to "all". + Check for a valid lr.default_rules value. + * src/lalr.c (state_lookahead_tokens_count): If lr.default_rules + is "accepting", then only mark the accepting state as + consistent. + (initialize_LA): Tell state_lookahead_tokens_count whether + lr.default_rules is "accepting". + * src/tables.c (action_row): If lr.default_rules is not "all", + then disable default rules in inconsistent states. + * src/print.c (print_reductions): Use this opportunity to + perform some assertions about whether lr.default_rules was + obeyed correctly. + * tests/local.at (AT_TEST_TABLES_AND_PARSE): New macro that + helps with checking the parser tables for a grammar. + * tests/input.at (%define lr.default_rules invalid values): New + test group. + * tests/reduce.at (AT_TEST_LR_DEFAULT_RULES): New macro using + AT_TEST_TABLES_AND_PARSE. + (`no %define lr.default_rules'): New test group generated by + AT_TEST_LR_DEFAULT_RULES. + (`%define lr.default_rules "all"'): Likewise. + (`%define lr.default_rules "consistent"'): Likewise. + (`%define lr.default_rules "accepting"'): Likewise. + +2009-04-20 Akim Demaille + + Consistently refer to Yacc, not YACC. + * src/getargs.c (usage, warnings_args): s/YACC/Yacc/. + +2009-04-17 Joel E. Denny + + Pacify make maintainer-check-posix. + * tests/input.at (%define, --define): Move bison command-line + options before grammar file name. + +2009-04-04 Joel E. Denny + + Document semicolon warnings. + * NEWS (2.5): Here. + +2008-12-08 Akim Demaille + + Fix portability issue in the test suite. + * tests/local.at (AT_MATCHES_CHECK): New. + Based on Perl instead of Sed. Sed has too many portability + pitfalls, not ever Sed is GNU Sed. + * tests/actions.at (Fix user actions without a trailing semicolon): + Use it. + +2008-12-07 Di-an Jan + + Implement the FIXME that ends an user action with a semicolon + if it seems necessary. + * src/scan-code.l (flex rules section): Flag cpp directive from + any `#' to the first unescaped end-of-line. Semicolon is not + needed after `;', `{', '}', or cpp directives and is needed after + any other token (whitespaces and comments have no effect). + * tests/actions.at (Fix user actions without a trailing semicolon): + New test. + * tests/input.at (AT_CHECK_UNUSED_VALUES): Add semicolons to + to make user actions complete statements. + Adjust column numbers in error messages. + * tests/regression.at (Fix user actions without a trailing semicolon): + Remove. Covered by new test. + +2009-04-14 Akim Demaille + + doc: minor fixes. + * doc/bison.texinfo (Decl Summary): Fix entry about %debug. + (Table of Symbols): Remove duplicate entry for %debug. + +2009-04-10 Eric Blake + + submodules: update to latest + * submodules/autoconf: Use latest upstream Autoconf. + +2009-04-06 Eric Blake + + Work around autoconf 2.63b bug in testsuite. + * tests/output.at (AT_CHECK_OUTPUT_FILE_NAME): Avoid tripping + autoconf bug related to # in test. + +2009-04-06 Joel E. Denny + + * NEWS (2.5): Describe new -D/--define feature. + +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. + +2008-11-21 Akim Demaille + + Display the changes in cross-options.texi. + * build-aux/cross-options.pl ($sep): New, to separate items. + * doc/Makefile.am ($(srcdir)/cross-options.texi): Use diff to display + the changes. + +2008-11-20 Di-an Jan + + Improves options in the manual. + * doc/bison.texinfo (-g, -x): Add space before argument. + (Option Cross Key): Implement FIXME: listing directives also. + * build-aux/cross-options.pl: Read from rather than <>. + (Short Option): Special case -d. Put arguments inside @option. + (Bison Directive): Add column, automatically extracted from + src/scan-gram.l (actual name passed as the first argument) + with special case for %define. + * doc/Makefile.am (doc/cross-options.texi): Pass src/scan-gram.l + to build-aux/cross-options.pl. + * src/getargs.c (usage): Document limitations of cross-options.pl. + * src/scan-gram.l: Likewise. + +2009-02-25 Akim Demaille + + Copyright years. + * data/glr.c: Add 2007 and 2008 here, consistenly with the comments. + +2008-12-08 Akim Demaille + + Install autoconf as a submodule to get m4sugar. + * .gitmodules: Add submodules/autoconf. + * data/m4sugar/foreach.m4, data/m4sugar/m4sugar.m4: Now links into + submodules/autoconf. + +2008-11-17 Joel E. Denny + + Simplify last patch slightly. + * src/getargs.c (getargs): Here. + +2008-11-17 Joel E. Denny + + Fix last warning from --enable-gcc-warnings. + * src/getargs.c (getargs): Don't assign const address to non-const + pointer. + +2008-11-17 Di-an Jan + + Handle --enable-gcc-warnings. + * src/getargs.c (command_line_location): Set parameters to void. + +2008-11-11 Akim Demaille + + AT_FULL_COMPILE. + * tests/actions.at, tests/regression.at: Use it. + +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. + +2008-11-09 Akim Demaille + + Require the generation of parse-gram.output. + * src/Makefile.am (YACC): Pass --report=all. + +2009-04-06 Joel E. Denny + + * NEWS (2.5): New stub. + +2009-04-06 Joel E. Denny + + Fix options documentation. + * build-aux/cross-options.pl: As in --help output, write optional + arguments as [=ARG] not =[ARG]. + * doc/bison.texinfo (Bison Options): Add -W/--warnings argument. + +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. + +2009-04-04 Joel E. Denny + + Remove spurious initial empty lines. + * data/location.cc: End the @output lines with an @. + +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 @. + +2009-04-04 Joel E. Denny + + Replace BISON_PROG_GNU_M4 with Autoconf's AC_PROG_GNU_M4. + If the first m4 in $PATH is wrong, it keeps looking. Moreover, its + requirements for a correct m4 are stricter. + * m4/m4.m4: Replace with Autoconf 2.63's m4/m4.m4. + * configure.ac: Update to use AC_PROG_GNU_M4. + Reported by Eric Blake. + +2009-04-03 Joel E. Denny + + Help with updating web manual. + * HACKING: Incorporate instructions from gnulib/doc/README. + * bootstrap.conf (gnulib_modules): Add gendocs. + +2009-04-03 Joel E. Denny + + Fix strange %define locations for default values. + Reported by Akim Demaille at + + and discussed again starting at + . + * data/bison.m4 (b4_percent_define_default): Leave syncline blank + because location information is bogus. + Use angle brackets to delimit fake file name because square brackets + look like underexpanded m4. Choose a better fake file name. + Use negative line numbers. + * src/muscle_tab.c (muscle_percent_define_default): Likewise. + * src/location.c (location_print): If line for a boundary is negative, + only print that boundary's file name. + * src/location.h: Document that. + * tests/skeletons.at (%define Boolean variables: invalid skeleton + defaults): Update output. + +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. + +2009-02-03 Joel E. Denny + + Add reminder about uploading public key to keys.gnupg.net. + * HACKING (Release Procedure): Here. + +2009-03-31 Akim Demaille + + bootstrap: --help to stdout. + * bootstrap (usage): Don't send --help to stderr. + Use a here doc instead of a long string. + +2009-03-31 Akim Demaille + + bootstrap: README-hacking no longer exists + * bootstrap (checkout_only_file): Set to HACKING. + +2009-03-26 Akim Demaille + + doc: merge HACKING and README-hacking. + Two files is confusing. + Reported by Alexandre Duret-Lutz. + + * README-hacking: Merge into... + * HACKING (Working from the repository): here. + +2009-03-26 Akim Demaille + + doc: update README-hacking. + * README-hacking: We now use git and git submodules. + Reported by Ralf Wildenhues and Alexandre Duret-Lutz. + +2009-03-26 Akim Demaille + + lalr1.cc: avoid GCC 4.3 warnings. + GCC 4.3 now warns about "a || b && c" and asks for explicit + parentheses. + Reported by Alexandre Duret-Lutz. + * data/location.cc: Update copyright years. + (Position::operator==): Use parens to make precedence explicit. + Compare lines and columns first, as they are more likely to be + different, and they are faster to compare. + +2009-03-26 Akim Demaille + + gnulib: update. + * gnulib: Update to latest. + * lib/Makefile.am (AM_CPPFLAGS): It is now defined by gnulib, so + use +=. + +2009-01-08 Akim Demaille + + Fix grep portability issues. + Grep on Solaris does not support -q. + Reported by Summum Bonum. + + * NEWS: Add a stub for 2.4.2. + * THANKS: Add Summum Bonum. + * tests/atlocal.in (EGREP): New. + (CC, CXX, XSLTPROC): Make it possible to override them via + envvars. + * tests/java.at: Use $EGREP instead of egrep. + Use AT_CHECK's ignore instead of grep's -q. + +2008-12-11 Joel E. Denny + + Version 2.4.1. + * NEWS: Set version and date. + * lib/Makefile.am: Update copyright year. + * tests/atlocal.in: Update copyright year. + +2008-12-11 Joel E. Denny + + Semicolon feature removal is not about future language support. + * NEWS: The semicolon feature is no longer active for newer languages, + so don't claim that it causes trouble for them. + +2008-12-11 Joel E. Denny + + * gnulib: Update submodule to HEAD. + +2008-12-09 Akim Demaille + + Update data/README. + * data/README: Document glr.cc, lalr1.java, m4sugar and xslt. + +2008-12-05 Eric Blake + + Build testsuite with newer autoconf. + * tests/output.at (m4_expand): Don't override in newer autoconf, + where the underlying implementation changed. + * tests/cxx-type.at (_AT_RESOLVED_GLR_OUTPUT) + (_AT_RESOLVED_GLR_OUTPUT_WITH_LOC, _AT_AMBIG_GLR_OUTPUT) + (_AT_AMBIG_GLR_OUTPUT_WITH_LOC, _AT_GLR_STDERR) + (_AT_VERBOSE_GLR_STDERR): Expand to double-quoted strings, + since some of them contain unbalanced ')'. + +2008-11-19 Joel E. Denny + + * NEWS: Clarify a little. + +2008-11-19 Joel E. Denny + + * NEWS: Update for recent changes. + +2008-11-18 Joel E. Denny + + Fix unexpanded macros in GLR defines file. + Reported by Csaba Raduly at + . + * THANKS (Csaba Raduly): Add. + * data/glr.c: Fix overquoting on b4_prefix for yylval and yylloc. + * tests/calc.at (_AT_DATA_CALC_Y): If %defines is specified, generate + lexer in a separate module that includes the defines file. + (AT_CHECK_CALC): Use AT_FULL_COMPILE and request compilation of lexer + source. + * tests/local.at (_AT_BISON_OPTION_PUSHDEFS): Push AT_DEFINES_IF. + Adjust AT_LOC and AT_VAL to use AT_NAME_PREFIX. + (AT_BISON_OPTION_POPDEFS): Pop AT_DEFINES_IF. + (AT_DATA_SOURCE_PROLOGUE): New. + (AT_DATA_GRAMMAR_PROLOGUE): Use AT_DATA_SOURCE_PROLOGUE. + (AT_DATA_SOURCE): New. + (AT_FULL_COMPILE): New, copied from master branch and extended to + support an additional source file. + +2008-11-17 Joel E. Denny + + Don't let maintainer-*-check targets force a version update. + * cfg.mk (_is-dist-target): Implement. maintainer-check* was already + handled. + +2008-11-17 Di-an Jan + + * doc/bison.texinfo: Synchronize ``Detail Node Listing''. + Align menus. Adjust word wrapping. Use node names for menu names. + (Examples): Don't abbreviate node names. + (LocalWords): Remove abbreviations. + (Copying): Make description a sentence. + (Java Action Features): Remove period to match the rest of menu. + +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). + +2008-11-07 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. + +2008-11-04 Akim Demaille + + * NEWS: Mention the trailing semicolon in action. + 2008-11-04 Akim Demaille Reformat NEWS. @@ -206,9 +1417,9 @@ 2008-08-29 Akim Demaille Clarify UPDATED use. - * doc/bison.texinfo: It refers to the last edition of this file, + * doc/bison.texinfo: It refers to the last edition of this file, not to the release date of Bison. - Reported by Joel E. Denny. + Reported by Joel E. Denny. 2008-08-29 Akim Demaille @@ -228,15 +1439,15 @@ 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. + * 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. + * data/lalr1.cc (yyerrork, yyclearin, YYRECOVERING): Define. 2008-08-26 Joel E. Denny @@ -21000,8 +22211,8 @@ ----- Copyright (C) 1987, 1988, 1991, 1992, 1993, 1994, 1995, 1996, - 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 - Free Software Foundation, Inc. + 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, + 2007, 2008, 2009 Free Software Foundation, Inc. Copying and distribution of this file, with or without modification, are permitted provided the copyright notice and this