* NEWS (2.5): Add entry for LAC, and mention LAC in entry for
other corrections to verbose syntax error messages.
* doc/bison.texinfo (Decl Summary): Rewrite entries for
lr.default-reductions and lr.type to be clearer, to mention
%nonassoc's effect on canonical LR, and to mention LAC. Add entry
for parse.lac.
(Glossary): Add entry for LAC.
(cherry picked from commit fcf834f9ec)
Conflicts:
doc/bison.texinfo
* data/yacc.c: Rename %define variable parse.lac.es-capacity to
parse.lac.es-capacity-initial. Accept parse.lac.memory-trace
with values of "failures" (default) or "full".
(b4_declare_parser_state_variables): Add yyesa, yyes, and
yyes_capacity variables.
(YYSTACK_USE_ALLOCA): Ignore it if LAC requested.
(YYSTACK_ALLOC, YYSTACK_FREE, YYSTACK_ALLOC_MAXIMUM): Define if
LAC requested.
(YYCOPY_NEEDED): New cpp macro.
(YYCOPY): Define if LAC requested.
(yy_lac_stack_realloc): New function implementing stack
reallocations. Use YYMAXDEPTH for maximum stack size given that
the stack should never need to grow larger than the main state
stack needs to grow without LAC.
(YY_LAC_ESTABLISH): Update yy_lac invocation.
(yy_lac): Add arguments for exploratory stack memory data
recorded in the main parser. Invoke yy_lac_stack_realloc when
reallocation is necessary.
(yysyntax_error): Add the same new arguments and pass them to
yy_lac.
(yypstate_delete): Free yyes if necessary.
(yyesa, yyes, yyes_capacity): #define these to yypstate members
in the case of push parsing.
(yyparse, yypush_parse): Initialize yyes and yyes_capacity.
Update yysyntax_error invocations. At yyreturn, free yyes if
necessary.
* src/parse-gram.y: %define parse.lac full.
* tests/input.at (LAC: errors for %define): Extend for
parse.lac-memory-trace.
* tests/regression.at (LAC: Exploratory stack): Extend to check
that stack reallocs happen when expected.
(LAC: Memory exhaustion): Update to use YYMAXDEPTH and
parse.lac.es-capacity-initial.
(cherry picked from commit 107844a3ee)
Conflicts:
src/parse-gram.c
src/parse-gram.h
src/parse-gram.y
LAC = lookahead correction. See discussion at
<http://lists.gnu.org/archive/html/bison-patches/2009-09/msg00034.html>.
However, one point there must be corrected: because of %nonassoc,
LAC is *not* always redundant for lr.type=canonical-lr.
* data/yacc.c: Accept values of "none" (default) or "full" for
parse.lac. Accept %define parse.lac.es-capacity to specify
capacity of LAC's temporary exploratory stack. It defaults to 20
and, for now, will not grow dynamically.
(b4_lac_flag, b4_lac_if): New m4 macros. Evaluate as true for
parse.lac!=none.
(YYBACKUP): Invoke YY_LAC_DISCARD.
(YY_LAC_ESTABLISH, YY_LAC_DISCARD): New cpp macros that invoke
yy_lac and track when it needs to be invoked
(yy_lac): New function that, given the current stack, determines
whether a token can eventually be shifted. Return status mimics
yyparse return status.
(yysyntax_error): Change yystate argument to yyssp so stack top
can be passed to yy_lac. If LAC is requested, build expected
token list by invoking yy_lac for every token instead of just
checking the current state for lookaheads. Return 2 if yy_lac
exhausts memory.
(yyparse, yypush_parse): Use local variable yy_lac_established and
cpp macros YY_LAC_ESTABLISH and YY_LAC_DISCARD to implement LAC.
Update yysyntax_error invocation. Add yyexhaustedlab code if LAC
is requested.
* tests/conflicts.at (%nonassoc and eof): Extend to check the
effect of each of -Dlr.type=canonical-lr and -Dparse.lac=full.
(%error-verbose and consistent errors): Likewise.
(LAC: %nonassoc requires splitting canonical LR states): New test
group demonstrating how LAC can fix canonical LR.
* tests/input.at (LAC: Errors for %define): New test group.
* tests/regression.at (LAC: Exploratory stack): New test group.
(LAC: Memory exhaustion): New test group.
(cherry picked from commit bf35c71c58)
Conflicts:
src/parse-gram.c
src/parse-gram.h
Now, whenever we update bison's copy of gnulib, bootstrap will
update itself the next time it's run.
* bootstrap: Copy from latest gnulib for bootstrap_sync support.
* bootstrap.conf (bootstrap_sync): Set to true.
* gnulib: Update to latest so bootstrap is in sync now.
(cherry picked from commit 10bae98af2)
On master, there is no yychar in lalr1.cc, but there is on
branch-2.5, and the prior cherry-pick of "Fix handling of yychar
manipulation in user semantic actions" wasn't adjusted for that
difference.
* data/lalr1.cc (yy::parser::parse): Translate yychar before
every use of yytoken, and add comments explaining this approach.
* tests/conflicts.at (%error-verbose and consistent errors):
Extend to test yychar manipulation with lalr1.cc.
* NEWS (2.5): Document.
* data/yacc.c (yysyntax_error): In a verbose syntax error
message while in a consistent state with a default action (which
must be an error action given that yysyntax_error is being
invoked), continue to drop the expected token list, but don't
drop the unexpected token unless there actually is no lookahead.
Moreover, handle that internally instead of returning 1 to tell
the caller to do it. With that meaning of 1 gone, renumber
return codes more usefully.
(yyparse, yypush_parse): Update yysyntax_error usage. Most
importantly, set yytoken to YYEMPTY when there's no lookahead.
* data/glr.c (yyreportSyntaxError): As in yacc.c, don't drop the
unexpected token unless there actually is no lookahead.
* data/lalr1.cc (yy::parser::parse): If there's no lookahead,
set yytoken to yyempty_ before invoking yysyntax_error_.
(yy::parser::yysyntax_error_): Again, don't drop the unexpected
token unless there actually is no lookahead.
* data/lalr1.java (YYParser::parse): If there's no lookahead,
set yytoken to yyempty_ before invoking yysyntax_error.
(YYParser::yysyntax_error): Again, don't drop the unexpected
token unless there actually is no lookahead.
* tests/conflicts.at (%error-verbose and consistent
errors): Extend test group to further reveal how the previous
use of the simple "syntax error" message was too general. Test
yacc.c, glr.c, lalr1.cc, and lalr1.java. No longer an expected
failure.
* tests/java.at (AT_JAVA_COMPILE, AT_JAVA_PARSER_CHECK): Move
to...
* tests/local.at: ... here.
(_AT_BISON_OPTION_PUSHDEFS): Push AT_SKEL_JAVA_IF definition.
(AT_BISON_OPTION_POPDEFS): Pop it.
(AT_FULL_COMPILE): Extend to handle Java.
(cherry picked from commit d2060f0634)
Conflicts:
data/lalr1.cc
data/lalr1.java
src/parse-gram.c
src/parse-gram.h
tests/java.at
These are purely whitespace changes that result in ugly code
but that make the next couple of patches much easier to read.
* data/glr.c (yyreportSyntaxError): Reindent.
* data/lalr1.cc (yy::parser::yysyntax_error_): Reindent.
* data/lalr1.java (YYParser::yysyntax_error): Reindent.
* data/yacc.c (yysyntax_error): Reindent.
(cherry picked from commit b4bbc4a03c)
Conflicts:
src/parse-gram.c
src/parse-gram.h
* data/yacc.c (yyparse, yypush_parse): For yysyntax_error
invocation, get rid of the while loop, which is misleading
because there are really at most two iterations.
(cherry picked from commit 34db451c37)
* bootstrap: Copy from gnulib's latest for the fix to
automatically anchor entries it constructs.
* gnulib: Update to latest just so it has the same bootstrap.
* .gitignore, build-aux/.gitignore, doc/.gitignore:
* lib/.gitignore, m4/.gitignore, po/.gitignore:
* runtime-po/.gitignore: Re-anchor all entries.
(cherry picked from commit e503b9cbbe)
Conflicts:
build-aux/.gitignore
doc/.gitignore
src/.gitignore
Jim Meyering reported this in
<http://lists.gnu.org/archive/html/bug-bison/2010-10/msg00007.html>.
* data/yacc.c: Use EXIT_SUCCESS as a witness for stdlib.h,
not _STDLIB_H. EXIT_SUCCESS has been defined by the standard
for quite some time.
* src/parse-gram.c, src/parse-gram.h: Regenerate.
* tests/regression.at: Tamper with the renamed witness.
(cherry picked from commit 8ff146cd31)
Conflicts:
ChangeLog
src/parse-gram.c
src/parse-gram.h
* .cvsignore, build-aux/.cvsignore, doc/.cvsignore, etc/.cvsignore:
* examples/calc++/.cvsignore, lib/.cvsignore, m4/.cvsignore:
* po/.cvsignore, runtime-po/.cvsignore, src/.cvsignore:
* tests/.cvsignore: Remove; I don't use CVS to maintain Bison
anymore and don't know of anybody else who does. If someone needs
these files, they can resurrect them.
* .gitignore, build-aux/.gitignore, doc/.gitignore, lib/.gitignore:
* m4/.gitignore, po/.gitignore, runtime-po/.gitignore:
Omit leading '/', since bootstrap omits it.
Adjust file names to match current contents better.
* bootstrap: Sync from gnulib: this contains the new gnulib_mk_hook
installed just for us.
* bootstrap.conf (excluded_files): Don't exclude codeset.m4,
glibc21.m4, inttypes_h.m4, size_max.m4, xsize.m4, as they are now
needed somehow. Don't have time to look into why.
(gnulib_modules): Change malloc to malloc-gnu. Do we really assume
the GNU malloc behavior, where malloc (0) != NULL unless we're
out of storage? If not, we can omit malloc-gnu; but for now I left
it in to be safe.
(vc_ignore): Remove.
* README-hacking: Renamed from HACKING, since gnulib bootstrap now
uses that convention.
(cherry picked from commit 95aed8db15)
Conflicts:
bootstrap
build-aux/.cvsignore
build-aux/.gitignore
doc/.cvsignore
doc/.gitignore
etc/.cvsignore
m4/.cvsignore
m4/.gitignore
src/.cvsignore
src/.gitignore
tests/.cvsignore
* NEWS (2.4.3): Mention that there are documentation fixes.
* doc/bison.texinfo (Expect Decl): Make it clear that %expect
turns conflicts into errors not warnings.
(Shift/Reduce): Likewise.
(Bison Options): Don't mention -Wsyntax. It doesn't exist.
(cherry picked from commit 3ffdd5f125)
* NEWS (2.4.3): Document fix.
* src/complain.c (error_message): Extend to handle incomplete
error messages so warn and warn_at can be used in more cases.
* src/gram.c (grammar_rules_useless_report): Use warn_at so that
-Werror is always obeyed.
* src/reduce.c (reduce_print): Use warn so that the "warnings
being treated as errors" message is printed consistently before
the first warning message. This makes testing easier.
* tests/local.at (AT_BISON_WERROR_MSG): New macro.
(AT_BISON_CHECK_NO_XML): Extend to check -Werror and
--warnings=error when warnings appear in bison's stderr.
(cherry picked from commit 954474bfa1)
* configure.ac (AM_INIT_AUTOMAKE): Underscore or dash in a
version string should disable gnits. Explain in comments.
(cherry picked from commit 122ff44429)
Conflicts:
configure.ac
* tests/output.at (AT_CHECK_OUTPUT): Extend to accept pre-tests.
(Output files: -dv >&-): Skip test group if running
maintainer-check-valgrind.
(cherry picked from commit c027cccb35)
* doc/bison.texinfo: Update GFDL version number.
* doc/fdl.texi: Update to version 1.3, taken from:
http://www.gnu.org/licenses/fdl.texi
(cherry picked from commit 804e83b26d)
Conflicts:
ChangeLog
* data/lalr1.cc (YYLLOC_DEFAULT): Move its definition from the
header file to the implementation file, after the user %code
sections.
* NEWS: Document it.
Conflicts:
ChangeLog
data/lalr1.cc
* data/lalr1.cc (YYRHSLOC): New.
(YYLLOC_DEFAULT): Use it.
* data/glr.cc: If location_type was user defined, do not include
location.hh, and do not produce location.hh and position.hh.
* tests/calc.at (YYLLOC_DEFAULT): Use YYRHSLOC.
Check that glr.cc supports user defined location_type.
* NEWS: Document this.
(cherry picked from commit bb9191dd31)
Conflicts:
ChangeLog
NEWS
data/lalr1.cc
tests/calc.at
* data/bison.m4 (b4_percent_define_use): New.
(b4_percent_define_get): Use it.
Accept a default value.
* data/c++.m4: Do not provide a default value for the %define
variable location_type, rather, use b4_percent_define_get with a
default argument where its value is needed.
* data/lalr1.cc: Do not load location.cc (which outputs both
location.hh and position.hh) if the user defined location_type.
Do not include location.hh either.
* data/glr.cc: Likewise.
(cherry picked from commit 7789b6e3e7)
Conflicts:
ChangeLog
data/bison.m4
data/c++.m4
data/lalr1.cc
* tests/calc.at (Span): Instead of begin/end, as in the built-in
location class, use first and last.
Define YYLLOC_DEFAULT to adjust to these changes.
* tests/local.at (_AT_BISON_OPTION_PUSHDEFS): Adjust to the
location_type changes.
(cherry picked from commit c826013fb3)
Conflicts:
tests/calc.at
* data/xslt/xml2dot.xsl (xsl:template match="bison-xml-report"):
Update output to include comments now produced by --graph.
(xsl:template match="automaton"): As for --graph, name the
digraph after the grammar file.
* src/print-xml.c (escape_bufs): Enlarge array.
(print_xml): Add bug-report and url attributes to
bison-xml-report element.
(cherry picked from commit bc81de36b7)
This handles the possibility that a "*/" might appear in
variable portions of those comments at some point in the future.
* src/graphviz.c (start_graph): Implement.
(cherry picked from commit b7666378f5)
That is, keep them as warnings because that should be sufficient
to satisfy POSIX without creating backward compatibility issues.
Suggested by Richard Stallman at
<http://lists.gnu.org/archive/html/bison-patches/2010-03/msg00033.html>.
* NEWS (2.5): Remove mention of complaint.
* src/reader.c (grammar_rule_check): Convert warning back to
complaint.
* tests/input.at (%prec's token must be defined): Update.
(cherry picked from commit 02354690ee)
* tests/local.at (AT_LOC_PUSHDEF, AT_LOC_POPDEF): New.
(_AT_BISON_OPTION_PUSHDEFS, AT_BISON_OPTION_POPDEFS): Use them to
define the appropriate AT_LOC accessors.
* tests/calc.at: Use AT_LOC accessors.
(cherry picked from commit 4f756f887b)
Conflicts:
tests/local.at
* tests/local.at (_AT_BISON_OPTION_PUSHDEFS):
Define AT_LOCATION_TYPE_IF.
(_AT_BISON_OPTION_POPDEFS): Undefine AT_LOCATION_TYPE_IF.
* tests/calc.at (_AT_DATA_CALC_Y): When %define location_type is
used, provide a user location type and use it.
(Simple LALR1 C++ Calculator): Add a test case for location_type.
(cherry picked from commit 24bb8c8c25)
Conflicts:
tests/calc.at
* tests/calc.at: Use yy::parser::location_type rather than
yy::location, since the former is always right, and might point to
another type than the latter.
(cherry picked from commit 36dc3637a4)
Conflicts:
tests/calc.at
* data/lalr1.cc: Include location.hh before stack.hh.
Remove the useless forward declarations of position and location.
Reported by Chris Morley.
* data/glr.cc: Likewise.
(cherry picked from commit 7799ef1594)
Conflicts:
data/lalr1.cc.
Reported by Dagobert Michelsen at
<http://lists.gnu.org/archive/html/bug-bison/2010-03/msg00023.html>.
* THANKS (Dagobert Michelsen): Add.
* configure.ac (AC_PREREQ): Set to 2.64 so we get the latest
Autoconf macro for handling the restrict keyword.
* gnulib: Update to latest, which no longer overrides that macro
from Autoconf.
(cherry picked from commit 4333ba11c6)
Reported by Tys Lefering at
<http://lists.gnu.org/archive/html/bug-bison/2010-03/msg00035.html>.
This fix is already implemented in glr.c and does not apply to
lalr1.java.
* data/lalr1.cc (yy::parser::parse): Increase size of
yyerror_range and adjust subscripting so you don't have to
subtract one from the beginning of the array.
* data/yacc.c (b4_declare_parser_state_variables,
yyparse, yypush_parse): Likewise.
(cherry picked from commit 48f4100a82)
Conflicts:
data/yacc.c
src/parse-gram.c
src/parse-gram.h
