Paul Eggert [Wed, 6 Nov 2002 07:04:24 +0000 (07:04 +0000)]
* src/scan-gram.l: Use more accurate diagnostics, e.g.
"integer out of range" rather than "invalid value".
* tests/input.at (Invalid $n, Invalid @n): Change expected wording
accordingly.
Paul Hilfinger [Wed, 6 Nov 2002 02:46:08 +0000 (02:46 +0000)]
src/tables.c (matching_state): Don't allow states to match if
either has GLR conflict entries.
ChangeLog: update for this and Hilfinger's preceding test-suite addition.
Paul Eggert [Tue, 5 Nov 2002 23:50:11 +0000 (23:50 +0000)]
(braces_level): Now auto, not static.
Initialize to zero if the compiler is being picky.
(INITIAL): Clear braces_level instead of incrementing it.
(SC_BRACED_CODE): Treat <% and %> as { and } when inside C code,
as POSIX 1003.1-2001 requires.
Akim Demaille [Mon, 4 Nov 2002 08:30:18 +0000 (08:30 +0000)]
* tests/glr-regr1.at (Badly Collapsed GLR States): Prototype yylex
and yyerror.
Have yyerror `use' its arguments.
* tests/calc.at (AT_CHECK_PUSHDEFS): AT_YYERROR_SEES_LOC_IF
returns true when location & yacc & pure & parse-param.
(_AT_DATA_CALC_Y): Let yyerror ``use'' its arguments.
Akim Demaille [Mon, 4 Nov 2002 08:28:01 +0000 (08:28 +0000)]
* src/location.h (LOCATION_PRINT): Use quotearg slot 3 to avoid
clashes.
* src/scan-gram.l: Use ['] instead of ['] to pacify
font-lock-mode.
Use complain_at.
Use quote, not quote_n since LOCATION_PRINT no longer uses the
slot 0.
Paul Eggert [Mon, 4 Nov 2002 07:29:57 +0000 (07:29 +0000)]
* src/reader.c (get_merge_function, grammar_current_rule_check):
Use consistent diagnostics for reporting type name clashes.
Quote the types with <>, for consistency with Yacc.
* tests/input.at (Type Clashes): Adjust to diagnostic changes.
Paul Eggert [Mon, 4 Nov 2002 06:06:44 +0000 (06:06 +0000)]
(get_merge_function, grammar_current_rule_check):
Use consistent diagnostics for reporting type name clashes.
Quote the types with <>, for consistency with Yacc.
Akim Demaille [Sun, 3 Nov 2002 16:41:57 +0000 (16:41 +0000)]
* data/c.m4 (b4_identification, b4_user_args, b4_parse_param):
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.
Akim Demaille [Sun, 3 Nov 2002 12:16:25 +0000 (12:16 +0000)]
* tests/calc.at: Change all the AT_CHECK_CALC_LALR and
AT_CHECK_CALC_GLR invocations to use % directives, instead of
command line options.
* tests/cxx-type.at: Formatting changes.
Paul Eggert [Sun, 3 Nov 2002 08:42:32 +0000 (08:42 +0000)]
Revamp to fix POSIX incompatibilities, to count columns correctly, and
to check for invalid inputs.
Use mbsnwidth to count columns correctly. Account for tabs, too.
Include mbswidth.h.
(YY_USER_ACTION): Invoke extend_location rather than LOCATION_COLUMNS.
(extend_location): New function.
(YY_LINES): Remove.
Handle CRLF in C code rather than in Lex code.
(YY_INPUT): New macro.
(no_cr_read): New function.
Scan UCNs, even though we don't fully handle them yet.
(convert_ucn_to_byte): New function.
Handle backslash-newline correctly in C code.
(SC_LINE_COMMENT, SC_YACC_COMMENT): New states.
(eols, blanks): Remove. YY_USER_ACTION now counts newlines etc.;
all uses changed.
(tag, splice): New EREs. Do not allow NUL or newline in tags.
Use {splice} wherever C allows backslash-newline.
YY_STEP after space, newline, vertical-tab.
("/*"): BEGIN SC_YACC_COMMENT, not yy_push_state (SC_COMMENT).
(letter, id): Don't assume ASCII; e.g., spell out a-z.
({int}, handle_action_dollar, handle_action_at): Check for integer
overflow.
(YY_STEP): Omit trailing semicolon, so that it's more like C.
(<SC_ESCAPED_STRING,SC_ESCAPED_CHARACTER>): Allow \0 and \00
as well as \000. Check for UCHAR_MAX, not 255.
Allow \x with an arbitrary positive number of digits, as in C.
Check for overflow here.
Allow \? and UCNs, for compatibility with C.
(handle_symbol_code_dollar): Use quote_n slot 1 to avoid collision
with quote slot used by complain_at.
Paul Eggert [Sun, 3 Nov 2002 08:40:39 +0000 (08:40 +0000)]
(Grammar Outline): Document // comments.
(Symbols): Document that trigraphs have no special meaning in Bison,
nor is backslash-newline allowed.
(Actions): Document that trigraphs have no special meaning.
Paul Eggert [Wed, 30 Oct 2002 09:45:46 +0000 (09:45 +0000)]
* lib/bitset_stats.c (bitset_stats_read, bitset_stats_write):
Check for close failures.
* src/files.h (xfclose): Return void, not int, since it always
returned zero.
* src/files.c (xfclose): Likewise. Report I/O error if ferror
indicates one.
* src/output.c (output_skeleton): Use xfclose rather than fclose
and ferror. xfclose now checks ferror.
* data/glr.c (YYLEFTMOST_STATE): Remove.
(yyreportTree): Use a stack-based leftmost state. This avoids
our continuing battles with bogus warnings about initializers.
Paul Eggert [Wed, 30 Oct 2002 05:38:30 +0000 (05:38 +0000)]
(YYLEFTMOST_STATE): Remove.
(yyreportTree): Use a stack-based leftmost state. This avoids
our continuing battles with bogus warnings about initializers.
Paul Eggert [Fri, 25 Oct 2002 05:14:04 +0000 (05:14 +0000)]
* tests/calc.at (_AT_DATA_CALC_Y): Remove unused strcat declaration.
* tests/cxx-type.at (_AT_TEST_GLR_CALC): Include stdlib.h, since
we use malloc. Don't assume 'A' through 'Z' are contiguous.
Don't assume strdup exists; POSIX says its an XSI extension.
Check for buffer overflow on input.
Paul Eggert [Fri, 25 Oct 2002 05:13:24 +0000 (05:13 +0000)]
(_AT_TEST_GLR_CALC): Include stdlib.h, since
we use malloc. Don't assume 'A' through 'Z' are contiguous.
Don't assume strdup exists; POSIX says its an XSI extension.
Check for buffer overflow on input.
Akim Demaille [Thu, 24 Oct 2002 11:40:27 +0000 (11:40 +0000)]
* src/output.c (output_skeleton): Don't disable M4sugar comments
too soon: it results in comments being expanded.
* data/yacc.c, data/glr.c, data/lalr1.cc: Do it right before the
first output.
Akim Demaille [Thu, 24 Oct 2002 10:01:52 +0000 (10:01 +0000)]
* data/yacc.c (m4_int_type): New.
* data/c.m4 (m4_int_type): Don't use yysigned_char, but `signed
char' as only yacc.c wants K&R portability.
* data/glr.c (yysigned_char): Remove.
* data/lalr1.cc: Rename the trailing b4_name as b4_parser_class_name.
Reported by Quoc Peyrot.
Paul Eggert [Wed, 23 Oct 2002 18:42:04 +0000 (18:42 +0000)]
* src/main.c (main): With --trace=time, report times even if a
non-fatal error occurs. Formerly, the times were reported in some
such cases but not in others.
* src/reader.c (reader): Just return if a complaint has been issued,
instead of exiting, so that 'main' can report times.
Paul Eggert [Wed, 23 Oct 2002 07:00:19 +0000 (07:00 +0000)]
(main): Use return to exit, undoing yesterday's change.
The last OS that we could find where this wouldn't work is
SunOS 3.5, and that's too old to worry about now.
Paul Eggert [Wed, 23 Oct 2002 06:30:49 +0000 (06:30 +0000)]
(struct yyltype): Define members even when not
doing locations. This is more consistent with yacc.c, and it
works around the following bug reports:
http://mail.gnu.org/pipermail/bug-bison/2002-October/001748.html
http://mail.gnu.org/pipermail/bug-bison/2002-October/001764.html
http://mail.gnu.org/pipermail/bug-bison/2002-October/001769.html
Paul Eggert [Wed, 23 Oct 2002 05:26:32 +0000 (05:26 +0000)]
Minor spelling and typographical fixes. Use @acronym consistently.
Standardize on "Yacc" instead of "YACC", "Algol" instead of "ALGOL".
Give a bit more history about BNF.
Paul Eggert [Wed, 23 Oct 2002 03:59:56 +0000 (03:59 +0000)]
Be consistent about 'bool'.
* src/complain.c (warning_issued): Renamed from warn_message_count; now bool.
(complaint_issued): Renamed from complain_message_count; likewise.
* src/main.c (main): Use exit to exit with failure.
* src/complain.c (fatal_at, fatal): Use EXIT_FAILURE and EXIT_SUCCESS
rather than 1 and 0.
* src/main.c (main): Likewise.
* src/getargs.c (getargs): Likewise.
* src/reader.c (reader): Likewise.
* src/getarg.c (getargs): Remove duplicate code for
"Try `bison --help'".
* src/files.c (xfopen, xfclose): Use EXIT_FAILURE rather than 2.
What was that "2" for?
* src/getargs.c (getargs): When there are too few operands, report
the last one. When there are too many, report the first extra
one. This is how diffutils does it.
Paul Eggert [Tue, 22 Oct 2002 05:12:08 +0000 (05:12 +0000)]
(fatal, fatal_at): Add __attribute__((__noreturn__)).
(warning_issued): Renamed from warn_message_count. Now bool.
(complaint_issued): Renamed from complain_message_count. Now bool.
Paul Eggert [Tue, 22 Oct 2002 05:06:21 +0000 (05:06 +0000)]
(getargs): Use EXIT_FAILURE and EXIT_SUCCESS rather than 1 and 0.
Remove duplicate code for "Try `bison --help'".
(usage): Add __attribute__((__noreturn__)).
Paul Eggert [Tue, 22 Oct 2002 04:53:49 +0000 (04:53 +0000)]
(warning_issued): Renamed from warn_message_count,
so that we needn't worry about integer overflow (!).
Now of type bool. All uses changed.
(complaint_issued): Renamed from complain_message_count; likewise.
(fatal_at, fatal): Use EXIT_FAILURE and EXIT_SUCCESS rather than 1 and 0.
Paul Eggert [Mon, 21 Oct 2002 05:29:07 +0000 (05:29 +0000)]
(PARAMS): Remove.
Include <limits.h> unconditionally, since it's guaranteeed even
for a freestanding C89 compiler.
(SHRT_MIN, SHRT_MAX): Remove, since C89 guarantees them.
Akim Demaille [Sun, 20 Oct 2002 12:51:10 +0000 (12:51 +0000)]
* data/c.m4 (b4_c_ansi_args): Recognize functions with no
arguments and output `void'.
(b4_c_function): Rename as...
(b4_c_function_def): this.
(b4_c_function_decl, b4_c_ansi_function_def)
(b4_c_ansi_function_decl): New.
Change the interpretation of the arguments: before `int, foo', now
`int foo, foo'.
* data/yacc.c (yyparse): Prototype and define thanks to these.
Adjust b4_c_function_def uses.
* data/glr.c (yyparse): Likewise, but ANSI only.
Paul Eggert [Sun, 20 Oct 2002 06:37:08 +0000 (06:37 +0000)]
Do not create a temporary file, as that involves security and
cleanup headaches. Instead, use a pair of pipes.
Derived from a suggestion by Florian Krohm.
Also, some other minor changes to avoid GCC warnings.