`look_ahead'. Discussed starting at
<http://lists.gnu.org/archive/html/bison-patches/2006-01/msg00049.html>
and then at
<http://lists.gnu.org/archive/html/bison-patches/2006-06/msg00017.html>.
* NEWS: For the next release, note the change to `--report'.
* TODO, doc/bison.1: Update English.
* doc/bison.texinfo: Update English.
(Understanding Your Parser, Bison Options): Document as
`--report=lookahead' rather than `--report=look-ahead'.
* src/conflicts.c: Update English in comments.
(lookahead_set): Rename from look_ahead_set.
(flush_reduce): Rename argument look_ahead_tokens to lookahead_tokens.
(resolve_sr_conflict): Rename local look_ahead_tokens to
lookahead_tokens, and update other uses.
(flush_shift, set_conflicts, conflicts_solve, count_sr_conflicts,
count_rr_conflicts, conflicts_free): Update uses.
* src/getargs.c (report_args): Move "lookahead" before alternate
spellings.
(report_types): Update uses.
(usage): For `--report' usage description, state `lookahead' spelling
rather than `look-ahead'.
* src/getargs.h (report.report_lookahead_tokens): Rename from
report_look_ahead_tokens.
* src/lalr.c: Update English in comments.
(compute_lookahead_tokens): Rename from compute_look_ahead_tokens.
(state_lookahead_tokens_count): Rename from
state_look_ahead_tokens_count.
Rename local n_look_ahead_tokens to n_lookahead_tokens.
(lookahead_tokens_print): Rename from look_ahead_tokens_print.
Rename local n_look_ahead_tokens to n_lookahead_tokens.
Update other uses.
Update English in output.
(add_lookback_edge, initialize_LA, lalr, lalr_free): Update uses.
* src/print.c: Update English in comments.
(lookahead_set): Rename from look_ahead_set.
(print_reduction): Rename argument lookahead_token from
look_ahead_token.
(print_core, state_default_rule, print_reductions, print_results):
Update uses.
* src/print_graph.c: Update English in comments.
(print_core): Update uses.
* src/state.c: Update English in comments.
(reductions_new): Update uses.
(state_rule_lookahead_tokens_print): Rename from
state_rule_look_ahead_tokens_print, and update other uses.
* src/state.h: Update English in comments.
(reductions.lookahead_tokens): Rename from look_ahead_tokens.
(state_rule_lookahead_tokens_print): Rename from
state_rule_look_ahead_tokens_print.
* src/tables.c: Update English in comments.
(conflict_row, action_row): Update uses.
* tests/glr-regression.at
(Incorrect lookahead during deterministic GLR,
Incorrect lookahead during nondeterministic GLR): Rename
print_look_ahead to print_lookahead.
* tests/torture.at: Update English in comments.
(AT_DATA_LOOKAHEAD_TOKENS_GRAMMAR): Rename from
AT_DATA_LOOK_AHEAD_TOKENS_GRAMMAR.
(Many lookahead tokens): Update uses.
* data/glr.c: Update English in comments.
* lalr1.cc: Likewise.
* yacc.c: Likewise.
* src/conflicts.h: Likewise.
* src/lalr.h: Likewise.
* src/main.c: Likewise.
* src/output.c: Likewise.
* src/parse-gram.c: Likewise.
* src/tables.h: Likewise.
* tests/calc.at: Likewise.
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.
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'.
* src/symlist.h, src/symlist.c (symbol_list): Add a mid_rule
member.
(symbol_list_new): Adjust.
* src/reader.c (symbol_typed_p): New.
(grammar_rule_check): Use it.
(grammar_midrule_action): Bind a mid-rule LHS to its rule.
Check its rule.
* tests/input.at (AT_CHECK_UNUSED_VALUES): New.
Use it.
* tests/actions.at (Exotic Dollars): Adjust.
is used.
Take the rule to check as argument, hence rename as...
(grammar_rule_check): this.
* src/reader.h, src/reader.c (grammar_rule_begin, grammar_rule_end):
Rename as...
(grammar_rule_begin, grammar_rule_end): these, for consistency.
(grammar_midrule_action, grammar_symbol_append): Now static.
* tests/torture.at (input): Don't rely on the default action
being always performed.
* tests/calc.at: "Set" $$ even when the action is "cut" with
YYERROR or other.
* tests/actions.at (Exotic Dollars): Instead of using unused
values, check that the warning is issued.
* data/glr.c: Use American spacing, for consistency.
* data/glr.cc: Likewise.
* data/lalr1.cc: Likewise.
* data/yacc.c: Likewise.
* data/yacc.c: Reformat comments slightly.
* doc/bison.texinfo: Replace "non-" with "non" when that makes sense,
for consistency. Fix some spelling errors and reword recently-included
text slightly.
* tests/cxx-type.at: Cast results of malloc, for C++.
destroy the RHS symbols of a rule.
* data/yacc.c (yylen): Initialize to 0.
Keep its value to the number of items to possibly shift.
In particular, a regular successful parse that ends on YYFINAL by
a (internal) YYACCEPT must not have yylen != 0.
(yyerrorlab, yyreturn): Pop the RHS.
Reorder a bit to emphasize the `shifting' bits of code.
(YYPOPSTACK): Now accept a number of items to pop.
* data/lalr1.cc: Likewise.
* data/glr.c: Formatting changes.
Use goto instead of fall through.
* doc/bison.texinfo (Destructor Decl): Complete.
when %expect fails because there were no conflicts.
* doc/bison.texinfo (Expect Decl): Tighten up wording in previous
change.
* tests/conflicts.at (%expect not enough, %expect too much):
(%expect with reduce conflicts): Adjust to new behavior.
* src/conflicts.c (conflicts_print): Unsatisfied %expectation are
errors.
* NEWS: Document this.
* doc/bison.texinfo (Expect Decl): Likewise.
Move the token type and YYSTYPE in the parser class.
* data/lalr1.cc (stack.hh, location.hh): Include earlier.
(parser::token): New, from the moved free definition of tokens.
(parser::semantic_value): Now a full definition instead of an
indirection to YYSTYPE.
(b4_post_prologue): No longer included in the header file, but
in the implementation file.
* doc/bison.texi (C+ Language Interface): Update.
* src/parse-gram.y: Support unary %define.
* tests/actions.at: Define global_tokens_and_yystype for backward
compatibility until we update the tests.
* tests/calc.at: Idem.
(first_line, first_column, last_line, last_column): Define for lalr1.cc
to simplify the code.
* NEWS: Remove notice of yytname change, since it was never in an
official release.
* data/glr.c (yydestroyGLRState): Rename local var to avoid shadowing
diagnostic.
* src/output.c (prepare): Likewise.
* data/lalr1.cc (YYERROR_VERBOSE_IF): New macro.
(yysyntax_error_): Use it to avoid GCC warning when YYERROR_VERBOSE
is not defined. This is an awful hack, but it's enough for now.
All callers changed.
* tests/glr-regression-at (make_value): Args are const pointers now,
to avoid GCC warning.
(Duplicated user destructor for lookahead): New test. Currently
skipped. It fails on my host but I'm not sure it'll always fail.
* doc/bison.texinfo (Parser Function): Document when yyparse
returns 2.
* data/lalr1.cc: Revert part of previous change, as it's incompatible.
(b4_filename_type): Renamed back from b4_file_name_type. All uses
changed.
(class position): file_name -> filename (reverting). All uses changed.
* data/glr.c (ATTRIBUTE_UNUSED): Remove, since it infringes on
the user's name space. All uses changed to __attribute__
((__unused__)).
(yyFail, yyMemoryExhausted, yyreportAmbiguity):
Add __attribute__ ((__noreturn__)).
* etc/clcommit: Remove. We weren't using it, and it failed
"make maintainer-distcheck".
* Makefile.maint: Merge from coreutils.
(CVS_LIST, CVS_LIST_EXCEPT): New macros.
(syntax-check-rules): Change list of rules as described below.
(sc_cast_of_alloca_return_value, sc_dd_max_sym_length):
(sc_file_system, sc_obsolete_symbols, sc_prohibit_atoi_atof):
(sc_prohibit_jm_in_m4, sc_root_tests, sc_tight_scope):
(sc_trailing_space): New rules.
(sc_xalloc_h_in_src): Remove.
(sc_cast_of_argument_to_free, sc_cast_of_x_alloc_return_value):
(sc_space_tab, sc_error_exit_success, sc_changelog):
(sc_system_h_headers, sc_sun_os_names, sc_unmarked_diagnostics):
(makefile-check, po-check, author_mark_check):
(makefile_path_separator_check, copyright-check):
Use grep -n, to make it easier to find violations.
Use CVS_LIST and CVS_LIST_EXCEPT.
(header_regexp, h_re): Remove.
(dd_c): New macro.
(sc_dd_max_sym_length, .re-list, news-date-check): New rules.
(my-distcheck): Use more-modern GCC flags.
(signatures, %.asc): Remove.
(rel-files, announcement): Remove signatures.
Restore old updating code, even though we don't use it, so
that we're the same as coreutils.
(alpha, beta, major): Depend on news-date-check.
Make the upload commands.
* data/c.m4, data/lalr1.cc, data/yacc.c: Normalize white space.
* lib/abitset.h, lib/bbitset.h, lib/bitset.h: Likewise.
* lib/bitset_stats.c, lib/ebitset.h, lib/lbitset.c: Likewise.
* lib/libitset.h, lib/timevar.c, lib/vbitset.h: Likewise.
* src/Makefile.am, src/gram.c, src/muscle_tab.h: Likewise.
* src/parse-gram.y, src/system.h, src/tables.c, src/vcg.c: Likewise.
* src/vcg_defaults.h, tests/cxx-type.at, tests/existing.at: Likewise.
* tests/sets.at: Likewise.
* data/m4sugar/m4sugar.m4: Sync from Autoconf, except that
we comment out the Autoconf version number.
* doc/bison.texinfo (Calc++ Scanner): Don't use atoi, as
it's error-prone and "make maintainer-distcheck" rejects it.
* lib/subpipe.c: Include <fcntl.h> without checking for HAVE_FCNTL_H.
Indent calls to "error" to pacify "make maintainer-distcheck",
when the calls are not intended to be translated.
* m4/subpipe.m4 (BISON_PREREQ_SUBPIPE): Don't check for fcntl.h.
* src/Makefile.am (DEFS): Use +=, to pacify
"make maintainer-distcheck".
(bison_SOURCES): Add scan-skel.h.
(sc_tight_scope): New rule, from coreutils.
* src/files.c (src_extension, header_extension):
Now static, not extern.
* src/getargs.c (short_options): Likewise.
* src/muscle_tab.c (muscle_table): Likewise.
* src/parse-gram.y (current_class, current_type, current_prec):
Likewise.
* src/reader.c (grammar_end, previous_rule_end): Likewise.
* src/getargs.h: Redo comments to pacify "make maintainer-distcheck".
* src/main.c (main): Cast bindtextdomain and textdomain calls to
void, to avoid warning when NLS is disabled.
* src/output.c: Include scan-skel.h.
(scan_skel): Remove decl, since scan-skel.h does this.
(output_skeleton):
Indent calls to "error" to pacify "make maintainer-distcheck".
* src/print_graph.c: Don't include <obstack.h>, as system.h does this.
* src/reader.h (gram_end, gram_lineno): New decls to pacify
"make maintainer-distcheck".
* src/scan-skel.l (skel_lex, skel_get_lineno, skel_get_in):
(skel_get_out, skel_get_leng, skel_get_text, skel_set_lineno):
(skel_set_in, skel_set_out, skel_get_debug, skel_set_debug):
(skel_lex_destroy, scan_skel): Move these decls to...
* src/scan-skel.h: New file.
* src/uniqstr.c (uniqstr_assert):
Indent calls to "error" to pacify "make maintainer-distcheck".
* tests/Makefile.am ($(srcdir)/package.m4): Use $(VAR),
not @VAR@.
* tests/torture.at: Revamp to avoid misuse of atoi that
"make maintainer-distcheck" complained about.
* NEWS: Document the behavior changes.
* data/glr.c (yyrecoverSyntaxError): Don't bother to pop the
stack before failing, as the cleanup code will do it for us now.
* data/lalr1.cc (yyerrlab): Likewise.
* data/glr.c (yyparse): Pop everything off the stack before
freeing it, so that destructors get called properly.
* data/lalr1.cc (yyreturn): Likewise.
* data/yacc.c (yyreturn): Pop and destroy the start symbol, too.
This is more consistent.
* doc/bison.texinfo (Destructor Decl): Mention more reasons
why destructors might be called. 1.875 -> 2.1.
(Destructor Decl, Decl Summary, Table of Symbols):
Some English-language cleanups for %destructor.
* tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR):
Add output line for destructor of start symbol.
* tests/calc.at (AT_CHECK_CALC): Add one to line counts,
because of that same extra output line.
associated with tokens.
* src/output.c (prepare_symbols): Don't escape strings,
since users don't want to see C escapes.
* tests/calc.at (AT_CHECK_CALC): Adjust to lack of quotes
in diagnostics.
* tests/regression.at (Token definitions, Web2c Actions): Likewise.
translate strings.
* data/yacc.c (_) [!defined _]: New macro.
All English strings wrapped inside this macro.
* doc/bison.texinfo (Bison Parser): Document _.
* po/POTFILES.in: Include src/parse-gram.c, since it now
includes translateable strings that parse-gram.y doesn't.
alloca function (when available) to extend the parser stack, due
to widespread problems in unchecked stack-overflow detection.
* data/glr.c (YYMAXDEPTH): Remove undef when zero. It's the user's
responsibility to set it to a positive value. This lets the user
specify a value that is not a preprocessor constant.
* data/yacc.c (YYMAXDEPTH): Likewise.
(YYSTACK_ALLOC): Define only if YYSTACK_USE_ALLOCA is nonzero.
* doc/bison.texinfo (Stack Overflow): YYMAXDEPTH no longer needs
to be a compile-time constant. However, explain the constraints on it.
Also, explain the constraints on YYINITDEPTH.
(Table of Symbols): Explain that alloca is no longer the default.
Explain the user's responsibility if they define YYSTACK_USE_ALLOCA
to 1.
(error_): Rename as...
(error): this, since it is visible to the user.
Adjust callers.
(Parser::message): Now an automatic variable from...
(Parser::yyreport_syntax_error_): here.
* tests/actions.at, tests/calc.at, tests/regression.at: Adjust to
Parser::error.
* tests/input.at: Escape $.
Introduce another definition to address simple location arrays.
(yyGLRStack): New member: yyerror_range.
(yyrecoverSyntaxError, yyparse): Update it.
(yyrecoverSyntaxError): Use it when shifting the error token to
have an accurate range, equivalent to the one computed by both
yacc.c and lalr1.cc.
* tests/cxx-type.at (_AT_TEST_GLR_CXXTYPES): Change its yylex so
that column numbers start at column 0, as per GNU Coding
Standards, the others tests, and the doc.
(_AT_RESOLVED_GLR_OUTPUT_WITH_LOC, _AT_AMBIG_GLR_OUTPUT_WITH_LOC):
Adjust to the above change (first column is 0).
And adjust the location of the "<error>", now covering the whole
line.
