(CXX): this, to keep the original Autoconf semantics.
Require 2.57.
* data/lalr1.cc: Fix b4_copyright invocations.
If YYDEBUG is not defined, don't depend upon name_ being defined.
(location.hh): Include string and iostream.
(Position::filename): New member.
(Position::Position ()): New.
(operator<< (Position)): New.
(operator- (Position, int)): New.
(Location::first, Location::last): Rename as...
(Location::begin, Location::end): these, to mock the conventional
iterator names.
(operator<< (Location)): New.
* tests/atlocal.in (CXX): New.
* tests/testsuite.at (AT_COMPILE_CXX): New.
* tests/calc.at (_AT_DATA_CALC_Y): Adjust yyerror to report the
locations in a more synthetic way.
(AT_CHECK_PUSHDEFS): AT_YYERROR_SEES_LOC_IF is positive if
lalr1.cc is used.
Adjust the C locations to match those from Emacs: first column is
column 0.
Change all the expected results.
Conform to the GCS: simplify the locations when applicable.
(LOC, VAL, YYLLOC_FORMAL, YYLLOC_ARG, USE_YYLLOC, LEX_FORMALS)
(LEX_ARGS, USE_LEX_ARGS, LEX_PRE_FORMALS, LEX_PRE_ARGS): Replace
these CPP macros with the m4 macros new defined by...
(AT_CHECK_PUSHDEFS): this, i.e.:
(AT_LALR1_CC_IF, AT_PURE_LEX_IF, AT_LOC, AT_VAL, AT_LEX_FORMALS)
(AT_LEX_ARGS, AT_USE_LEX_ARGS, AT_LEX_PRE_FORMALSm AT_LEX_PRE_ARGS)
New macros.
(AT_CHECK_POPDEFS): Undefine them.
(AT_CHECK_CALC_LALR1_CC): New.
Use it for the first lalr1.cc test.
handle negative $ indices or $ indices in embedded rules correctly.
See <http://mail.gnu.org/archive/html/bug-bison/2003-01/msg00076.html>.
(b4_rhs_value): Change to use YYFILL macro.
(b4_rhs_location): Ditto.
(yyfill): New function to copy from stack tree into array
incrementally.
(yyuserAction): Modify to allow incremental move of semantic values
to rhs array when in GLR mode.
Define YYFILL to use in user-defined actions to fill semantic array
as needed.
Remove dummy use of yystack, as there is now a guaranteed use.
(yydoAction): Modify to allow incremental move of semantic values
to rhs array when in GLR mode.
(yyresolveAction): Ditto.
(yyglrShiftDefer): Update comment.
(yyresolveStates): Use X == NULL for pointers, not !X.
(yyglrReduce): Ditto.
(yydoAction): Ditto
we don't need to worry about yyerrlab1 being reported as an
"unused label" by non-GCC C compilers. The downside is that if
locations are used then a couple of statements are duplicated each
time YYERROR is invoked, but the upside is that the warnings
should vanish.
(yyerrlab1): Move code to YERROR.
(yyerrlab2): Remove. Change uses back to yyerrlab1.
This reverts some of the 2002-12-27 change.
Robert Anisko <anisko_r@lrde.epita.fr>
* data/lalr1.cc (parse::yyerrlab1): When popping the stack, stop
when the stacks contain one element, as the loop would otherwise
free the last state, and then use the top state (the one we just
popped). This means that the initial elements will not be freed
explicitly, as is the case in yacc.c; it is not a problem, as
these elements have fake values.
top of the location stack's error locations.
(yyerrlab): Set it. When discarding a token, push its location
onto yylerrsp so that we don't lose track of the error's end.
(yyerrlab1): Now is only the target of YYERROR, so that we can
properly record the location of the action that failed. For GCC
2.93 and later, insert an __attribute__ ((__unused__)) to avoid
GCC warning about yyerrlab1 being unused if YYERROR is unused.
(yyerrlab2): New label, which yyerrlab now falls through to.
Compute the error's location by applying YYLLOC_DEFAULT to
the locations of all the symbols that went into the error.
(YYSTYPE): Renamed from yystype.
(YYSTYPE_IS_DECLARED): New macro, used to prevent double-typedef.
(struct YYLTYPE): Renamed from struct yyltype.
(YYLTYPE): Renamed from yyltype.
(yyltype, yystype): New (and obsolescent) macros,
for backward compatibility.
(YYSTYPE): Declare as union YYSTYPE if the user
does not specify a union tag. This is for compatibility with
Solaris 9 yacc.
(YYSTYPE): Renamed from yystype.
(YYSTYPE_IS_DECLARED): New macro, used to prevent double-typedef.
(struct YYLTYPE): Renamed from struct yyltype.
(YYLTYPE): Renamed from yyltype.
(yyltype, yystype): New (and obsolescent) macros,
for backward compatibility.
GCC 3.2.1 (which depends on yychar == YYEMPTY when there is no
lookahead symbol, and which sets yychar in parser actions) and it
disagreed with the Bison documentation. This should fix the bug
reported by Andrew Walrond in
<http://mail.gnu.org/pipermail/bug-bison/2002-December/001949.html>.
(YYTRANSLATE): Don't check for negative argument,
as the caller now does that.
(yyclearin, YYBACKUP, yyparse): Use yychar, not yytoken.
(YYEMPTY): Parenthesize right hand side, since others use it.
(yyparse): Don't assume that our generated code is the only code
that sets yychar.
since this causes problems when __file__ contains character
sequences like "@" that are treated specially by src/scan-skel.l.
Instead, just use the file's basename. This fixes the bug
reported by Martin Mokrejs in
<http://mail.gnu.org/pipermail/bug-bison/2002-December/001949.html>.
{}, since this breaks the common use of `YYDPRINTF ((...));' if a
single statement is desired (e.g. before `else'). Work around GCC
warnings by surrounding corresponding calls with {} if needed.
(yyhasResolvedValue): Remove unused function.
(yymergeOptionSets, yyresolvStack): Use `continue;' for empty
loop body.
(yyreportSyntaxError): Renamed from yyreportParseError.
(yyrecoverSyntaxError): Renamed from yyrecoverParseError.
All uses changed.
* data/yacc.c (yy_stack_print, YY_STACK_PRINT, yy_reduce_print)
(YY_REDUCE_PRINT): New.
(yyparse): Use them.
* data/glr.c (yy_reduce_print): Use YYFPRINTF, no need for
YYDPRINT here.
(yyglrReduce, yyrecoverParseError, yyparse): Don't report the
state reached after the reduction/recovery, since...
(yyparse, yyprocessOneStack): Report the state we are entering in.
Add support for --trace=skeleton.
* src/scan-skel.l: %option debug.
Scan strings of non-@ or n instead of character by character.
(scan_skel): Handle trace_skeleton.
(QPUTS): New.
(@output_parser_name@, @output_header_name@): ``Restore'' their
support (used to be M4 macros).
* data/yacc.c: Quote larger chunks, a la glr.c.
* data/lalr1.cc: Likewise.
The header guards are no longer available, so use some other
string than `YYLSP_NEEDED'.
defines it.
* data/glr.c (yystos): New.
(b4_yysymprint_generate, b4_yydestruct_generate): Invoke.
(YYDSYMPRINT): New.
(yyval): Don't define it, it is handled via M4.
(yyrecoverParseError): Free verbosely the discarded symbols.
* data/yacc.c (yysymprint): Remove, rather...
(b4_yysymprint_generate): invoke.
* data/c.m4 (b4_yysymprint_generate): New.
Accept pointers as arguments, as opposed to the version from
yacc.c.
(b4_yydestruct_generate): Likewise.
* tests/cations.at (Printers and Destructors): Use Bison directives
instead of CPP macros.
Don't rely on internal details.
* data/yacc.c: Rename yychar1 as yytoken, as in glr.c.
Don't work on yychar (i.e., do set it to YYEMPTY, don't match
it against YYEMPTY and so forth), work on yytoken (i.e., set
it to YYEMPTY etc.).
(yydestruct): Replace with a b4_yydestruct_generate invocation.
(b4_symbol_actions): Remove.
* data/glr.c (YYTRANSLATE): As for yacc.c, if negative, it stands
for 0, end-of-input.
Restore.
* src/scan-gram.l (last_string): Is global to the file, not to
yylex.
* src/parse-gram.y (input): Don't append the epilogue here,
(epilogue.opt): do it here, and free the scanner's obstack.
* src/reader.c (epilogue_set): Rename as...
(epilogue_augment): this.
* data/c.m4 (b4_epilogue): Defaults to empty.
(b4_input_suffix, b4_output_parser_suffix, b4_output_parser_name,
b4_output_header_suffix, b4_output_header_name, b4_header_guard):
Remove, since they couldn't handle arbitrary characters in file
names.
Remove use of "#ifdef b4_header_guard", since it
mishandled funny characters in file names, and anyway it isn't
needed any more.
(YYSTYPE_IS_TRIVIAL): Define when the .h file would.
(b4_input_suffix, b4_output_parser_suffix, b4_output_parser_name,
b4_output_header_suffix, b4_output_header_name, b4_header_guard):
Remove, since they couldn't handle arbitrary characters in file
names.
Use YYSLP_NEEDED instead of b4_header_guard.
yyerror can be variadic.
* data/yacc.c (b4_yyerror_args): New.
Use it when calling yyerror.
* data/glr.c (b4_yyerror_args, b4_lyyerror_args): New.
Use it when calling yyerror.
* doc/bison.texinfo (Error Reporting): Adjust.
* tests/calc.at (_AT_DATA_CALC_Y): Adjust.
* tests/cxx-type.at (_AT_TEST_GLR_CALC): Adjust.
New.
* data/yacc.m4 (b4_pure_args, b4_Pure_args): New.
(b4_parse_param): Remove.
Use b4_identification.
Propagate b4_pure_args where needed to pass them to yyerror.
* data/glr.m4 (b4_parse_param): Remove.
(b4_user_formals, b4_pure_args, b4_pure_formals, b4_lpure_args)
(b4_lpure_formals): New.
Use b4_identification.
(YY_USER_FORMALS, YY_USER_ARGS): Remove, replaced by
b4_user_formals and b4_user_args.
(yyexpandGLRStack, yyFail, yyaddDeferredAction, yyglrShiftDefer)
(yyreportAmbiguity): When using a pure parser, also need
the location, and the parse-params.
Adjust callers.
(yyuserAction, yyglrShift, yyreportParseError, yyrecoverParseError):
When using a pure parser, also need the parse-params.
Adjust callers.
* tests/calc.at: Test pure (%pure-parser) and absolutely pure
(%pure-parser + %parse-param) LALR and GLR parsers.
(AT_CHECK_PUSHDEFS, AT_CHECK_POPDEFS): New, define AT_PARAM_IF,
AT_LOCATION_IF, AT_PURE_IF, AT_GLR_IF, AAT_PURE_AND_LOC_IF,
AT_GLR_OR_PARAM_IF, AT_YYERROR_ARG_LOC_IF, AT_YYERROR_SEES_LOC_IF.
(_AT_DATA_CALC_Y): Equip for purity of yyerror.
(_AT_CHECK_CALC_ERROR): Use AT_YYERROR_SEES_LOC_IF.
* tests/cxx-type.at (_AT_TEST_GLR_CALC): Equip for yyerror purity.
* doc/bison.texinfo: Untabify the whole file.
(Parser Function): Document %parse-param, deprecate YYPARSE_PARAM.
(Pure Calling): Document %lex-param, deprecate YYLEX_PARAM.
(Error Reporting): Adjust to these new directives.
Document %error-verbose, deprecate YYERROR_VERBOSE.
