+2006-06-06 Akim Demaille <akim@epita.fr>
+
+ Extract the parsing of user actions from the grammar scanner.
+ As a consequence, the relation between the grammar scanner and
+ parser is much simpler. We can also split "composite tokens" back
+ into simple tokens.
+ * src/gram.h (ITEM_NUMBER_MAX, RULE_NUMBER_MAX): New.
+ * src/scan-gram.l (add_column_width, adjust_location): Move to and
+ rename as...
+ * src/location.h, src/location.c (add_column_width)
+ (location_compute): these.
+ Fix the column count: the initial column is 0.
+ (location_print): Be robust to ending column being 0.
+ * src/location.h (boundary_set): New.
+ * src/main.c: Adjust to scanner_free being renamed as
+ gram_scanner_free.
+ * src/output.c: Include scan-code.h.
+ * src/parse-gram.y: Include scan-gram.h and scan-code.h.
+ Use boundary_set.
+ (PERCENT_DESTRUCTOR, PERCENT_PRINTER, PERCENT_INITIAL_ACTION)
+ (PERCENT_LEX_PARAM, PERCENT_PARSE_PARAM): Remove the {...} part,
+ which is now, again, a separate token.
+ Adjust all dependencies.
+ Whereever actions with $ and @ are used, use translate_code.
+ (action): Remove this nonterminal which is now useless.
+ * src/reader.c: Include assert.h, scan-gram.h and scan-code.h.
+ (grammar_current_rule_action_append): Use translate_code.
+ (packgram): Bound check ruleno, itemno, and rule_length.
+ * src/reader.h (gram_in, gram__flex_debug, scanner_cursor)
+ (last_string, last_braced_code_loc, max_left_semantic_context)
+ (scanner_initialize, scanner_free, scanner_last_string_free)
+ (gram_out, gram_lineno, YY_DECL_): Move to...
+ * src/scan-gram.h: this new file.
+ (YY_DECL): Rename as...
+ (GRAM_DECL): this.
+ * src/scan-code.h, src/scan-code.l, src/scan-code-c.c: New.
+ * src/scan-gram.l (gram_get_lineno, gram_get_in, gram_get_out):
+ (gram_get_leng, gram_get_text, gram_set_lineno, gram_set_in):
+ (gram_set_out, gram_get_debug, gram_set_debug, gram_lex_destroy):
+ Move these declarations, and...
+ (obstack_for_string, STRING_GROW, STRING_FINISH, STRING_FREE):
+ these to...
+ * src/flex-scanner.h: this new file.
+ * src/scan-gram.l (rule_length, rule_length_overflow)
+ (increment_rule_length): Remove.
+ (last_braced_code_loc): Rename as...
+ (gram_last_braced_code_loc): this.
+ Adjust to the changes of the parser.
+ Move all the handling of $ and @ into...
+ * src/scan-code.l: here.
+ * src/scan-gram.l (handle_dollar, handle_at): Remove.
+ (handle_action_dollar, handle_action_at): Move to...
+ * src/scan-code.l: here.
+ * src/Makefile.am (bison_SOURCES): Add flex-scanner.h,
+ scan-code.h, scan-code-c.c, scan-gram.h.
+ (EXTRA_bison_SOURCES): Add scan-code.l.
+ (BUILT_SOURCES): Add scan-code.c.
+ (yacc): Be robust to white spaces.
+
+ * tests/conflicts.at, tests/input.at, tests/reduce.at,
+ * tests/regression.at: Adjust the column numbers.
+ * tests/regression.at: Adjust the error message.
+
+2006-06-06 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * src/getargs.c (usage): Mention GLR not just LALR(1) in --help output.
+ Use Akim's wording from
+ <http://lists.gnu.org/archive/html/bison-patches/2006-05/msg00056.html>.
+
+2006-06-06 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Between Bison releases, manually append `+' to the previous Bison
+ release number, and use that as a signal to automatically print the
+ ChangeLog's CVS Id keyword from --version. Discussed starting at
+ <http://lists.gnu.org/archive/html/bison-patches/2006-05/msg00028.html>.
+ * ChangeLog: Add Id header.
+ * configure.ac (AC_INIT): Append `+' to `2.3'.
+ * src/.cvsignore: Add revision.c.
+ * src/Makefile.am (bison_SOURCES): Add revision.c and revision.h.
+ (BUILT_SOURCES): Add revision.c.
+ (revision.c): New target rule. This file defines a new global variable
+ named revision. It initializes it with either the Id from ChangeLog
+ or, if VERSION doesn't contain `+', with the empty string.
+ * src/getargs.c (version): Print the value of revision.
+ * src/revision.h: Extern revision.
+
+2006-06-05 Paul Eggert <eggert@cs.ucla.edu>
+
+ * NEWS: Version 2.3.
+ * configure.ac (AC_INIT): Likewise.
+
+2006-05-30 Paul Eggert <eggert@cs.ucla.edu>
+
+ * data/glr.c (YYRECOVERING): Define to be a function-like macro
+ with no arguments, not as an object-like macro. This is for
+ compatibility with data/yacc.c. Problem reported by John P. Hartmann in
+ <http://lists.gnu.org/archive/html/bug-bison/2006-05/msg00059.html>.
+ * doc/bison.texinfo (Action Features, Error Recovery, Table of Symbols):
+ Document this.
+
+2006-05-30 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * src/getargs.c (usage): Back out yesterday's modification of the
+ --help output so that we don't have to wait for translation before
+ releasing 2.3.
+
+2006-05-29 Paul Eggert <eggert@cs.ucla.edu>
+
+ * doc/bison.texinfo (Introduction): Don't say "GLR grammar".
+ Problem reported by Akim Demaille.
+
+2006-05-29 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * src/getargs.c (usage): Mention GLR not just LALR(1) in --help output.
+
+2006-05-26 Paul Eggert <eggert@cs.ucla.edu>
+
+ * data/yacc.c (yy_reduce_print): Omit trailing white space in
+ generated source code. Problem reported by Frans Englich in
+ <http://lists.gnu.org/archive/html/bug-bison/2006-05/msg00049.html>.
+
+2006-05-22 Paul Eggert <eggert@cs.ucla.edu>
+
+ * Makefile.maint (gzip_rsyncable, GZIP_ENV): Compute within the
+ shell, not within 'make', so that 'make' by an ordinary builder
+ (using GNU make) does not worry about configuring gzip. This also
+ works around a bug reported independently by Keith Thompson and by
+ Georg Schwarz, whereby gzip 1.2.4 --help would output usage on
+ stderr rather than stdout, messing up the build logs.
+
+2006-05-21 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * data/yacc.c (yyparse): Wrap the final return from yyparse inside YYID
+ to make sure that YYID will never be unused. This fixes a 'make
+ maintainer-check' failure caused by the recent changes to the 'Trivial
+ grammars' test case, which caused g++ 4.1.0 to complain that YYID was
+ not used.
+ * data/glr.c (yyparse): Wrap yyparse's return inside YYID just in case.
+
+2006-05-21 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * data/glr.c (yyresolveLocations): Remove bogus YYASSERT that the
+ state before an empty RHS is always resolved here. Only the location
+ of that state is guaranteed to be resolved, and that's enough. This
+ fixes the remaining bug reported by Derek M. Jones in
+ <http://lists.gnu.org/archive/html/bug-bison/2006-05/msg00027.html>.
+ * tests/glr-regression.at (Uninitialized location when reporting
+ ambiguity): Test the above case.
+ Also, the embedded comments in this test case claim it checks the case
+ of an empty RHS that has inherited the initial location. However, the
+ corresponding LHS was already resolved, so yyresolveLocations didn't
+ actually have reason to modify it. Fix this by forcing
+ nondeterministic operation at the beginning of the parse.
+
+2006-05-20 Paul Eggert <eggert@cs.ucla.edu>
+
+ * data/c.m4 (b4_yy_symbol_print_generate):
+ (b4_yy_symbol_print_generate): Use 'YYSTYPE const' rather than
+ 'const YYSTYPE', and similarly for YYLTYPE. This fixes one
+ of the bugs reported today by Derek M Jones in
+ <http://lists.gnu.org/archive/html/bug-bison/2006-05/msg00027.html>.
+ * doc/bison.texinfo (Value Type): Document that YYSTYPE must be
+ defined to be a type name without parens or brackets.
+ (Location Type): Similarly for YYLTYPE.
+ * tests/regression.at (Trivial grammars): Put in a test for this
+ bug that will be caught by 'make maintainer-check' (though not,
+ alas, by 'make check' unless your compiler is picky).
+
+2006-05-19 Paul Eggert <eggert@cs.ucla.edu>
+
+ * NEWS: Version 2.2.
+ * configure.ac (AC_INIT): Likewise.
+
+2006-05-17 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * data/glr.c (yyreportTree): Make room in yystates for the state
+ preceding the RHS. This fixes the segmentation fault reported by Derek
+ M. Jones in
+ <http://lists.gnu.org/archive/html/help-bison/2006-05/msg00035.html>.
+ (yyreportTree, yypdumpstack): Subtract 1 from yyrule before printing
+ to the user. Reported for yyreportTree by Derek M. Jones later in the
+ same thread.
+ * THANKS: Add Derek M. Jones.
+ Update my email address.
+ Fix typo in Steve Murphy's name.
+
+2006-05-14 Paul Eggert <eggert@cs.ucla.edu>
+
+ * data/glr.c (yyreportSyntaxError): Fix off-by-one error in
+ checking against YYLAST that caused the parser to miss a potential
+ alternative in its diagnostic.
+ Problem reported by Maria Jose Moron Fernandez in
+ <http://lists.gnu.org/archive/html/bug-bison/2006-05/msg00024.html>.
+ * data/lalr1.cc (yysyntax_error_): Likewise.
+ * data/yacc.c (yysyntax_error): Likewise.
+ * tests/regression.at (_AT_DATA_DANCER_Y): Use static array for
+ tokens, in case we run into an older C compiler.
+ (_AT_DATA_EXPECT2_Y, AT_CHECK_EXPECT2): New macros.
+ Use them to check for the off-by-one error fixed above.
+
+ * data/yacc.c (yytnamerr): Fix typo: local var should be of type
+ YYSIZE_T, not size_t.
+ * tests/regression.at (Trivial grammars): New test, to catch
+ the error fixed by the above patch.
+
+2006-05-14 Akim Demaille <akim@lrde.epita.fr>
+
+ * doc/bison.texinfo (C++ Bison Interface): Clarify the naming
+ scheme.
+ Reported by Steve Murphy.
+
+2006-05-14 Akim Demaille <akim@lrde.epita.fr>
+
+ * data/glr.cc, data/lalr1.cc: Using %defines is mandatory.
+ * data/glr.cc: b4_location_flag is now b4_locations_flag.
+
+2006-05-14 Akim Demaille <akim@lrde.epita.fr>
+
+ Implement --trace=m4.
+ * src/getargs.c (trace_types, trace_args): Accept trace_m4.
+ * src/output.c (output_skeleton): When set, pass -dV to m4.
+
+ Factor the handling of flags in m4.
+ * src/output.c (prepare): Rename the muscle names debug, defines,
+ error_verbose to debug_flag, defines_flag, error_verbose_flag.
+ * data/c.m4: Adjust.
+ (_b4_define_flag_if, b4_define_flag_if, b4_defines_if): New.
+ Use b4_define_flag_if to define other b4_FLAG_if macros.
+ (b4_location_if): As a consequence, rename as...
+ (b4_locations_if): this, for consistency.
+ Adjust all the skeletons.
+
+2006-05-14 Akim Demaille <akim@lrde.epita.fr>
+
+ * etc/bench.pm: Shorten bench names.
+
+2006-05-14 Akim Demaille <akim@lrde.epita.fr>
+
+ * src/output.h, src/output.c (error_verbose): Move to...
+ * src/getargs.h, src/getargs.c: here.
+ Sort the flags.
+ Adjust dependencies.
+
+2006-05-13 Paul Eggert <eggert@cs.ucla.edu>
+
+ * data/c.m4 (b4_copyright): Put the special exception for Bison
+ skeletons here, so we don't have to put it in each skeleton. All
+ uses changed. Suggested by Akim Demaille. Also, wrap the
+ copyright notice, in case it is longer than 80 columns. Replace
+ comma by newline after title.
+
+2006-05-11 Paul Eggert <eggert@cs.ucla.edu>
+
+ * doc/bison.texinfo (Calc++ Scanner): The flex behavior is an
+ incompatibility, not a bug. Mention that it wasn't fixed as of
+ flex 2.5.33.
+
+2006-05-11 Akim Demaille <akim@lrde.epita.fr>
+
+ * examples/extexi: Enforce the precedence of concatenation over
+ >>.
+ Reported by Tommy Nordgren.
+
+2006-05-11 Akim Demaille <akim@lrde.epita.fr>
+
+ * data/lalr1.cc (yytranslate_): Rename token as t to avoid clashes
+ with the member "token".
+ Reported by Martin Nylin.
+
+2006-05-08 Paul Eggert <eggert@cs.ucla.edu>
+
+ * data/glr.c: Switch to Bison 2.2 special-exception language in
+ the copyright notice. Use more-regular format for titles and
+ copyright notices.
+ * data/glr.cc: Likewise.
+ * data/location.cc: Likewise.
+ * data/yacc.cc: Likewise.
+ * doc/bison.texinfo (Conditions): Document this.
+ * NEWS: likewise. Upgrade version to 2.2.
+
+2006-04-27 Akim Demaille <akim@lrde.epita.fr>
+
+ * data/glr.cc: Remove dead code.
+
+2006-04-25 Paul Eggert <eggert@cs.ucla.edu>
+
+ * bootstrap: Comment out the AM_CPPFLAGS line, since we don't use
+ that variable and the line breaks the bootstrap. Problem reported
+ by Juan M. Guerrero.
+
+2006-04-24 Akim Demaille <akim@lrde.epita.fr>
+
+ * doc/bison.texinfo (Multiple start-symbols): New.
+
+2006-04-24 Akim Demaille <akim@lrde.epita.fr>
+
+ * etc/README, etc/bench.pl: New.
+
+2006-04-03 Akim Demaille <akim@lrde.epita.fr>
+
+ * src/scan-gram.l: Be robust to BRACED_CODE appearing before any
+ rule.
+ Reported by Mickael Labau.
+ * tests/input.at (Torturing the Scanner): Test it.
+
+2006-03-16 Paul Eggert <eggert@cs.ucla.edu>
+
+ * doc/bison.texinfo (Decl Summary): Don't mention yylloc twice.
+ Problem reported by Bob Rossi.
+
+2006-03-13 Paul Eggert <eggert@cs.ucla.edu>
+
+ * doc/bison.texinfo: Remove @shorttitlepage stuff; it wasn't used
+ and didn't really work.
+ For the index, use @ifnotinfo, not @iftex.
+ Minor cleanups of spacing and terminology.
+
+2006-03-12 Akim Demaille <akim@lrde.epita.fr>
+
+ * tests/local.at (_AT_BISON_OPTION_PUSHDEFS): Fix the definition
+ of AT_NAME_PREFIX when %name-prefix is not used.
+
+2006-03-12 Akim Demaille <akim@lrde.epita.fr>
+
+ Apply --prefix to C++ skeletons too: they change the namespace.
+ The test suite already exercize these cases.
+ * data/c++.m4 (b4_namespace): New.
+ * data/lalr1.cc, data/glr.cc, data/location.cc: Use it instead of `yy'.
+ * data/lalr1.cc (yytnameerr_): Move its definition into the namespace.
+ * data/yacc.c, data/glr.c: Remove a useless `[]'.
+ * doc/bison.texinfo: Document it.
+ (Option Cross Key): Use @multitable in all formats. It looks
+ nicer, even in TeX outputs.
+ (Rules): Use the same code whatever the output type is.
+ * tests/local.at (_AT_BISON_OPTION_PUSHDEFS)
+ (_AT_BISON_OPTION_POPDEFS): Support AT_NAME_PREFIX.
+ * tests/calc.at: Use it, instead of hard coding `yy'.
+
+2006-03-10 Akim Demaille <akim@lrde.epita.fr>
+
+ * TODO: Remove dead items.
+
+2006-03-10 Akim Demaille <akim@lrde.epita.fr>
+
+ * doc/FAQ: Remove, merged into...
+ * doc/bison.texinfo (FAQ): this.
+ * doc/Makefile.am (EXTRA_DIST): Adjust.
+
+2006-03-10 Akim Demaille <akim@lrde.epita.fr>
+
+ * data/c.m4 (b4_token_enum): Always define the enum of tokens,
+ even if empty.
+ * data/lalrl1.cc, data/glr.cc (parser::token_type): New.
+ * doc/bison.texinfo (Calc++ Scanner): Use it.
+
+2006-03-09 Paul Eggert <eggert@cs.ucla.edu>
+
+ Fix two nits reported by twlevo, plus one more that I discovered.
+
+ * src/assoc.h (assoc_to_string): Give a name to the arg, as
+ this is the usual Bison style.
+ * src/location.h (location_print): Likewise.
+
+ * src/reader.h (token_name): Likewise.
+
+2006-03-08 Paul Eggert <eggert@cs.ucla.edu>
+
+ Fix some nits reported by twlevo.
+ * doc/FAQ: Remove ancient Y2K FAQ, replacing it with "secure"
+ and "POSIX". Use more-modern syntax for URLs. Mention C++
+ and ask for Java. Don't hardwire OS version numbers. Add
+ copyright notice.
+ * m4/.cvsignore: Add unistd_h.m4, for latest gnulib.
+ * src/conflicts.c (solved_conflicts_obstack): Now static.
+
+2006-03-08 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * doc/bison.texinfo (Introduction): Mention GLR and C++ as on the web
+ page. Say "you can use it" not "you may use it" as on the web page;
+ we're describing capabilities not granting permission.
+
+2006-03-06 Paul Eggert <eggert@cs.ucla.edu>
+
+ * data/glr.c (yyresolveLocations): Rename local variables to avoid
+ shadowing warnings. Use usual patter for iterating through RHS.
+ * tests/glr-regression.at
+ (Uninitialized location when reporting ambiguity):
+ Modify yylex so that it uses its argument, rather than trying
+ to rely on ARGSUSED (which doesn't work for gcc with warnings).
+ const char -> char const.
+
+ * tests/Makefile.am ($(srcdir)/package.m4, maintainer-check-valgrind):
+ Don't use tabs inside commands; it messes up 'ps'.
+ Problem reported by twlevo.
+
+2006-03-06 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * tests/glr-regression.at (Uninitialized location when reporting
+ ambiguity): New test case.
+ * data/glr.c (yyresolveLocations): New function, which uses
+ YYLLOC_DEFAULT.
+ (yyresolveValue): Invoke yyresolveLocations before reporting an
+ ambiguity.
+ * doc/bison.texinfo (Default Action for Locations): Note
+ YYLLOC_DEFAULT's usage for ambiguity locations.
+ (GLR Semantic Actions): Cross-reference those notes.
+
+2006-03-04 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * tests/glr-regression.at (Leaked semantic values when reporting
+ ambiguity): Remove unnecessary union and type declarations.
+ (Leaked lookahead after nondeterministic parse syntax error): New test
+ case.
+ * data/glr.c (yyparse): Check for zero stacks remaining before
+ attempting to shift the lookahead so that you don't lose it.
+
+2006-03-02 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Avoid memory leaks by not invoking longjmp in yyreportAmbiguity.
+ * tests/glr-regression.at (Leaked semantic values when reporting
+ ambiguity): New test case.
+ * data/glr.c (yyreportAmbiguity): Invoke yyyerror directly and return
+ yyabort rather than invoking yyFail, which invokes longjmp. Remove the
+ now unnecessary yystackp parameter.
+ (yyresolveValue): Return yyreportAmbiguity's result. Now the necessary
+ destructors can be called.
+
+ * tests/glr-regression.at: Don't invoke bison with `-t' unnecessarily
+ in existing testcases.
+
+2006-03-02 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ Don't leak semantic values for parent RHS when a user action cuts the
+ parser, and clean up related code a bit.
+ * tests/glr-regression.at (Leaked merged semantic value if user action
+ cuts parse): Rename to...
+ (Leaked semantic values if user action cuts parse): ... this. Add check
+ for leaked parent RHS values.
+ * data/glr.c (yydestroyGLRState): In debugging output, distinguish
+ between an unresolved state (non-empty chain of semantic options) and
+ an incomplete one (signaled by an empty chain).
+ (yyresolveStates): Document the interface. Move all manipulation of a
+ successfully or unsuccessfully resolved yyGLRState to...
+ (yyresolveValue): ... here so that yyresolveValue always leaves a
+ yyGLRState with consistent data and thus is easier to understand.
+ Remove the yyvalp and yylocp parameters since they are always just
+ taken from the yys parameter. When reporting a discarded merged value
+ in debugging output, note that it is incompletely merged. Document the
+ interface.
+ (yyresolveAction): If resolving any of the RHS states fails, destroy
+ them all rather than leaking them. Thus, as long as user actions are
+ written to clean up the RHS correctly, yyresolveAction always cleans up
+ the RHS of a semantic option. Document the interface.
+
+2006-02-27 Paul Eggert <eggert@cs.ucla.edu>
+
+ * data/glr.c (yyexpandGLRStack): Catch an off-by-one error that
+ led to a segmentation fault in GNU Pascal. Problem reported
+ by Waldek Hebisch.
+
+2006-02-21 Joel E. Denny <jdenny@ces.clemson.edu>
+
+ * doc/bison.texinfo (Mid-Rule Actions): Explain how to bury a
+ mid-rule action inside a nonterminal symbol in order to declare a
+ destructor for its semantic value.
+
+2006-02-16 Paul Eggert <eggert@cs.ucla.edu>
+
+ * data/yacc.c [(! defined yyoverflow || YYERROR_VERBOSE) && !
+ YYSTACK_USE_ALLOCA && ! defined YYSTACK_ALLOC && defined
+ __cplusplus && ! defined _STDLIB_H && !
+ ((defined YYMALLOC || defined malloc) && (defined YYFREE ||
+ defined free))]: Include <stdlib.h> rather than rolling our own
+ declarations of malloc and free, to avoid problems with
+ incompatible declarations (using 'throw') C++'s stdlib.h. This
+ should fix Debian bug 340012
+ <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=340012>,
+ reported by Guillaume Melquiond.
+
+2006-02-13 Paul Eggert <eggert@cs.ucla.edu>
+
+ * NEWS: Clarify symbols versus types in unused-value warnings.
+
+ * configure.ac (AC_INIT): Bump version number.
+
+2006-02-13 Paul Eggert <eggert@cs.ucla.edu>
+
+ * NEWS: Version 2.1a.
+ * tests/headers.at (AT_TEST_CPP_GUARD_H): Declare yyerror and yylex,
+ since C99 requires this.
+
2006-02-11 Paul Eggert <eggert@cs.ucla.edu>
* m4/c-working.m4: New file.
2005-09-19 Akim Demaille <akim@epita.fr>
- * NEWS, configure.ac: Version 2.1a.
+ * NEWS, configure.ac: update version number to 2.1a.
2005-09-16 Paul Eggert <eggert@cs.ucla.edu>
Copying and distribution of this file, with or without
modification, are permitted provided the copyright notice and this
notice are preserved.
+
+$Id$
projects / bison.git / blobdiff