+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.
+ (Bison Declaration 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.
+
projects / bison.git / blobdiff