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23 years agoStill making progress in separating Bison into (i) input, (ii)
Akim Demaille [Sat, 15 Dec 2001 14:35:57 +0000 (14:35 +0000)] 
Still making progress in separating Bison into (i) input, (ii)
process, (iii) output: now we can directly output the parser file
without using table_obstack at all.
* src/files.c, src/files.h (table_obstack): Bye bye.
(parser_file_name): New.
* src/files.c (compute_output_file_names): Compute it.
* src/output.c (actions_output, output_parser)
(output_master_parser): To a file instead of an obstack.

23 years agoAttach actions to rules, instead of pre-outputting them to
Akim Demaille [Sat, 15 Dec 2001 14:14:30 +0000 (14:14 +0000)] 
Attach actions to rules, instead of pre-outputting them to
actions_obstack.
* src/gram.h (rule_t): action and action_line are new members.
* src/reader.c (symbol_list): Likewise.
(copy_action): Save the actions within the rule.
(packgram): Save them in rule_table.
* src/output.c (actions_output): New.
(output_parser): Use it on `%%actions'.
(output_rule_data): Don't free rule_table.
(output): Do it.
(prepare): Don't save the `action' muscle.
* src/bison.simple: s/%%action/%%actions/.

23 years ago* src/reader.c (copy_action): When --yacc, don't append a `;'
Akim Demaille [Sat, 15 Dec 2001 11:09:05 +0000 (11:09 +0000)] 
* src/reader.c (copy_action): When --yacc, don't append a `;'
to the user action: let it fail if lacking.
Suggested by Aharon Robbins and Tom Tromey.

23 years agoRegen.
Akim Demaille [Sat, 15 Dec 2001 11:08:37 +0000 (11:08 +0000)] 
Regen.

23 years ago* src/lex.c (literalchar): Simply return the char you decoded, non
Akim Demaille [Fri, 14 Dec 2001 16:03:28 +0000 (16:03 +0000)] 
* src/lex.c (literalchar): Simply return the char you decoded, non
longer mess around with obstacks and int pointers.
Adjust all callers.

23 years ago* src/lex.c (literalchar): Don't escape the special characters,
Akim Demaille [Fri, 14 Dec 2001 15:39:05 +0000 (15:39 +0000)] 
* src/lex.c (literalchar): Don't escape the special characters,
just decode them, and keep them as char (before, eol was output as
the 2 char string `n' etc.).
* src/output.c (output_rule_data): Use quotearg to output the
token strings.

23 years ago* src/bison.simple (YYSIZE_T, YYSTACK_ALLOC, YYSTACK_FREE):
Paul Eggert [Fri, 14 Dec 2001 01:54:30 +0000 (01:54 +0000)] 
* src/bison.simple (YYSIZE_T, YYSTACK_ALLOC, YYSTACK_FREE):
Do not infringe on the global user namespace when using C++.
(YYFPRINTF, YYSTDERR): New macros, needed for the above.
All uses of `fprintf' and `stderr' changed.

* doc/bison.texinfo: Document YYFPRINTF, YYSTDERR.

23 years ago(const): Do not define; that is now config.h's job.
Paul Eggert [Fri, 14 Dec 2001 01:52:50 +0000 (01:52 +0000)] 
(const): Do not define; that is now config.h's job.
(YYSIZE_T, YYSTACK_ALLOC, YYSTACK_FREE):
Do not infringe on the global user namespace when using C++.
(YYFPRINTF, YYSTDERR): New macros, needed for the above.
All uses of `fprintf' and `stderr' changed.

23 years agoDocument YYFPRINTF, YYSTDERR.
Paul Eggert [Fri, 14 Dec 2001 01:51:33 +0000 (01:51 +0000)] 
Document YYFPRINTF, YYSTDERR.

23 years agoThe computation of nullable is broken: it doesn't handle empty
Akim Demaille [Thu, 13 Dec 2001 11:02:21 +0000 (11:02 +0000)] 
The computation of nullable is broken: it doesn't handle empty
RHS's properly.
* tests/torture.at (GNU AWK Grammar): New.
* tests/sets.at (Nullable): New.
* src/nullable.c (set_nullable): Instead of blindly looping over
`ritems', loop over the rules, and then over their rhs's.
Work around Autotest bugs.
* src/warshall.c (bitmatrix_print): Don't use `+--+' as table
frame, because Autotest understand lines starting with a `+' as
traces from the shell.  Then, they are not processed properly.
Admittedly an Autotest bug, but we don't have time to wait for
Autotest to catch up.
* tests/regression.at (Broken Closure): Adjust to the new table
frames.
Move to...
* tests/sets.at: here.

23 years ago* src/closure.c (closure): Use nrules instead of playing tricks
Akim Demaille [Thu, 13 Dec 2001 11:02:04 +0000 (11:02 +0000)] 
* src/closure.c (closure): Use nrules instead of playing tricks
with BITS_PER_WORD.

23 years ago* src/print.c (print_actions): Output the handling of `$' as the
Akim Demaille [Thu, 13 Dec 2001 11:01:51 +0000 (11:01 +0000)] 
* src/print.c (print_actions): Output the handling of `$' as the
traces do: shifting the token EOF.  Before EOF was treated as a
nonterminal.
* tests/regression.at: Adjust some tests.
* src/print_graph.c (print_core): Complete the set of items via
closure.  The next-to-final and final states are still unsatisfying,
but that's to be addressed elsewhere.
No longer output the rule numbers, but do output the state number.
A single loop for the shifts + gotos is enough, but picked a
distinct color for each.
(print_graph): Initialize and finalize closure.

23 years ago* src/reader.c (readgram): Remove dead code, an strip useless
Akim Demaille [Thu, 13 Dec 2001 11:01:36 +0000 (11:01 +0000)] 
* src/reader.c (readgram): Remove dead code, an strip useless
braces.
(get_type): Remove, unused.

23 years ago* src/complain.h, src/complain.c: Remove error_one_per_line, rely
Akim Demaille [Wed, 12 Dec 2001 15:22:46 +0000 (15:22 +0000)] 
* src/complain.h, src/complain.c: Remove error_one_per_line, rely
on that of lib/error.c.

23 years agoSome hosts don't like `/' in includes.
Akim Demaille [Wed, 12 Dec 2001 11:58:19 +0000 (11:58 +0000)] 
Some hosts don't like `/' in includes.
* src/system.h: Include libgettext.h without qualifying the path.
* src/Makefile.am (INCLUDES): Add $(top_srcdir)/intl, remove
$(top_srcdir).

23 years agoRegen.
Akim Demaille [Wed, 12 Dec 2001 11:56:52 +0000 (11:56 +0000)] 
Regen.

23 years agoUpdate.
Marc Autret [Tue, 11 Dec 2001 23:03:44 +0000 (23:03 +0000)] 
Update.

23 years agoUpdate.
Marc Autret [Tue, 11 Dec 2001 20:21:09 +0000 (20:21 +0000)] 
Update.

23 years ago* src/output.c (output_parser): Remove useless muscle.
Marc Autret [Tue, 11 Dec 2001 20:19:44 +0000 (20:19 +0000)] 
* src/output.c (output_parser): Remove useless muscle.

23 years ago* src/bison.simple: Remove #line just before %%epilogue. It
Marc Autret [Tue, 11 Dec 2001 20:10:22 +0000 (20:10 +0000)] 
* src/bison.simple: Remove #line just before %%epilogue. It
is now handled in ...
* src/reader.c (read_additionnal_code): Add the output of a
#line for the epilogue.

23 years ago* src/reader.c (copy_definition): Re-use CPP-outed code which
Marc Autret [Mon, 10 Dec 2001 23:19:09 +0000 (23:19 +0000)] 
* src/reader.c (copy_definition): Re-use CPP-outed code which
replace precedent remove.
* src/bison.simple: Remove #line before %%prologue because
%%input-line is wrong at this time.

23 years agoUpdate.
Marc Autret [Mon, 10 Dec 2001 22:56:40 +0000 (22:56 +0000)] 
Update.

23 years ago* src/reader.c (symbols_output): Clean up.
Marc Autret [Mon, 10 Dec 2001 22:55:06 +0000 (22:55 +0000)] 
* src/reader.c (symbols_output): Clean up.
* src/output.c (output_gram, output): Clean up.

23 years agoTypo.
Akim Demaille [Mon, 10 Dec 2001 09:11:42 +0000 (09:11 +0000)] 
Typo.

23 years ago* src/lalr.c (initialize_lookaheads): New. Extracted from...
Akim Demaille [Mon, 10 Dec 2001 09:10:28 +0000 (09:10 +0000)] 
* src/lalr.c (initialize_lookaheads): New.  Extracted from...
* src/LR0.c (set_state_table): here.
* src/lalr.c (lalr): Call it.

23 years ago* src/state.h (shifts): Remove the `number' member: shifts are
Akim Demaille [Mon, 10 Dec 2001 09:10:10 +0000 (09:10 +0000)] 
* src/state.h (shifts): Remove the `number' member: shifts are
attached to state, hence no longer need to be labelled with a
state number.

23 years agoNow that states have a complete set of members, the linked list of
Akim Demaille [Mon, 10 Dec 2001 09:09:49 +0000 (09:09 +0000)] 
Now that states have a complete set of members, the linked list of
shifts is useless: just fill directly the state's shifts member.
* src/state.h (shifts): Remove the `next' member.
* src/LR0.c (first_state, last_state): Remove.
Adjust the callers.
(augment_automaton): Don't look for the shifts that must be added
a shift on EOF: it is those of the state we looked for!  But now,
since shifts are attached, it is no longer needed to looking
merely by its id: its number.

23 years ago* src/LR0.c (augment_automaton): Better variable locality.
Akim Demaille [Mon, 10 Dec 2001 09:09:28 +0000 (09:09 +0000)] 
* src/LR0.c (augment_automaton): Better variable locality.
Remove an impossible branch: if there is a state corresponding to
the start symbol being shifted, then there is shift for the start
symbol from the initial state.

23 years ago* src/LR0.c (augment_automaton): Call `insert_eof_shifting_state'
Akim Demaille [Mon, 10 Dec 2001 09:09:14 +0000 (09:09 +0000)] 
* src/LR0.c (augment_automaton): Call `insert_eof_shifting_state'
only when appropriate: when insert_start_shifting_state' is not
invoked.
* tests/regression.at (Rule Line Numbers): Adjust.

23 years ago* src/LR0.c (augment_automaton): Now that all states have shifts,
Akim Demaille [Mon, 10 Dec 2001 09:09:00 +0000 (09:09 +0000)] 
* src/LR0.c (augment_automaton): Now that all states have shifts,
merge the two cases addition shifts to the initial state.

23 years ago* src/lalr.c (set_state_table): Move to...
Akim Demaille [Mon, 10 Dec 2001 09:08:46 +0000 (09:08 +0000)] 
* src/lalr.c (set_state_table): Move to...
* src/LR0.c: here.
* src/lalr.c (lalr): Don't call it...
* src/LR0.c (generate_states): do it.
* src/LR0.h (first_state): Remove, only the table is used.

23 years ago* src/LR0.h (first_shift, first_reduction): Remove.
Akim Demaille [Mon, 10 Dec 2001 09:08:28 +0000 (09:08 +0000)] 
* src/LR0.h (first_shift, first_reduction): Remove.
* src/lalr.c: Don't use first_shift: find shifts through the
states.

23 years ago* src/LR0.c: Attach shifts to states as soon as they are
Akim Demaille [Mon, 10 Dec 2001 09:08:09 +0000 (09:08 +0000)] 
* src/LR0.c: Attach shifts to states as soon as they are
computed.
* src/lalr.c (set_state_table): Instead of assigning shifts to
state, just assert that the mapping was properly done.

23 years ago* src/LR0.c (insert_start_shift): Rename as...
Akim Demaille [Mon, 10 Dec 2001 09:07:55 +0000 (09:07 +0000)] 
* src/LR0.c (insert_start_shift): Rename as...
(insert_start_shifting_state): this.
(insert_eof_shifting_state, insert_accepting_state): New.
(augment_automaton): Adjust.
Better locality of the variables.
When looking if the start_symbol is shifted from the initial
state, using `while (... symbol != start_symbol ...)' sounds
better than `while (... symbol < start_symbol ...)': If fail
to see how the order between symbols could be relevant!

23 years ago* src/getargs.h: Don't declare `spec_name_prefix' and
Akim Demaille [Mon, 10 Dec 2001 09:07:41 +0000 (09:07 +0000)] 
* src/getargs.h: Don't declare `spec_name_prefix' and
`spec_file_prefix', declared by src/files.h.
* src/files.c, src/files.h: Default for spec_name_prefix is "yy".
* src/muscle_tab.c (muscle_init): Default prefix to NULL.
* src/output.c (prepare): Adjust.
* src/reader.c (symbols_output): Likewise.
* src/vmsgetargs.c: Vaguely adjust, but who cares?

23 years ago* src/muscle_tab.c (muscle_init): NULL is a better default than
Akim Demaille [Mon, 10 Dec 2001 09:07:17 +0000 (09:07 +0000)] 
* src/muscle_tab.c (muscle_init): NULL is a better default than
`"0"'.

23 years ago* src/reader.c (reader): Calling symbols_output once is enough.
Akim Demaille [Mon, 10 Dec 2001 09:07:03 +0000 (09:07 +0000)] 
* src/reader.c (reader): Calling symbols_output once is enough.

23 years agoNow that states have a complete set of members, the linked list of
Akim Demaille [Mon, 10 Dec 2001 09:06:48 +0000 (09:06 +0000)] 
Now that states have a complete set of members, the linked list of
reductions is useless: just fill directly the state's reductions
member.
* src/state.h (struct reductions): Remove member `number' and
`next'.
* src/LR0.c (first_reduction, last_reduction): Remove.
(save_reductions): Don't link the new reductions, store them in
this_state.
* src/lalr.c (set_state_table): No need to attach reductions to
states, it's already done.
* src/output.c (output_actions): No longer free the shifts, then
the reductions, then the states: free all the states and their
members.

23 years ago* src/options.c (OPTN, DRTV, BOTH): New.
Akim Demaille [Mon, 10 Dec 2001 09:06:27 +0000 (09:06 +0000)] 
* src/options.c (OPTN, DRTV, BOTH): New.
(option_table): Use them.
* src/muscle_tab.c: Don't include xalloc.h and string.h: that's
the job of system.h.
* src/options.c: Don't include stdio.h and xalloc.h for the same
reasons.

23 years ago* src/output.c (output, prepare): Make sure the values of the
Akim Demaille [Mon, 10 Dec 2001 09:06:13 +0000 (09:06 +0000)] 
* src/output.c (output, prepare): Make sure the values of the
muscles `action' and `prologue' are 0-terminated.

23 years agoClean up GCC warnings.
Akim Demaille [Mon, 10 Dec 2001 09:05:47 +0000 (09:05 +0000)] 
Clean up GCC warnings.
* src/reader.c (copy_action): `buf' is not used.
(parse_skel_decl): Be static.
* src/muscle_tab.c (mhash1, mhash2, muscle_insert): Preserve `const'.
* src/options.h (create_long_option_table): Have a real prototype.
* lib/hash.c, lib/hash.h (hash_insert, hash_insert_at, hash_delete)
(hash_delete_at): Return const void *.
Adjust casts to preserve the const.

23 years agoRemove tests/Makefile.in and po/Makefile.in.
Akim Demaille [Mon, 10 Dec 2001 09:02:16 +0000 (09:02 +0000)] 
Remove tests/Makefile.in and po/Makefile.in.

23 years ago* configure.in: Require 2.52g.
Akim Demaille [Mon, 10 Dec 2001 09:00:36 +0000 (09:00 +0000)] 
* configure.in: Require 2.52g.
M4 is not needed, but AUTOM4TE is.
* m4/m4.m4: Remove.
* tests/Makefile.am: Adjust.

23 years agoOne structure for states is enough, even though theoretically
Akim Demaille [Mon, 10 Dec 2001 08:45:22 +0000 (08:45 +0000)] 
One structure for states is enough, even though theoretically
there are LR(0) states and LALR(1) states.
* src/lalr.h (state_t): Remove.
(state_table): Be state_t **, not state_t *.
* src/state.h (core, CORE_ALLOC): Rename as...
(state_t, STATE_ALLOC): this.
Add the LALR(1) members: shifts, reductions, errs.
* src/LR0.c (state_table): Rename as...
(state_hash): this, to avoid name clashes with the global
`state_table'.
* src/print_graph.c, src/LR0.c, src/LR0.h, src/conflicts.c
* src/lalr.c, src/lalr.h, src/output.c, src/print.c: Adjust.

23 years agoBison dumps core on bash.y.
Akim Demaille [Mon, 10 Dec 2001 08:44:49 +0000 (08:44 +0000)] 
Bison dumps core on bash.y.
Reported by Pascal Bart.
* src/warshall.c (bitmatrix_print): New.
(TC): Use it.
When performing a transitive closure R(i, j) && R(j, k) => R(i, k),
j must be the outer loop.
* tests/regression.at (Broken Closure): New.

23 years ago* tests/atlocal.in (CPPFLAGS): Do not leave a space between -I and
Akim Demaille [Wed, 5 Dec 2001 10:59:35 +0000 (10:59 +0000)] 
* tests/atlocal.in (CPPFLAGS): Do not leave a space between -I and
its argument.
Reported by Peter Hámorský.

23 years agoRegen.
Akim Demaille [Wed, 5 Dec 2001 09:47:22 +0000 (09:47 +0000)] 
Regen.

23 years ago* src/conflicts.c (err_table): Remove.
Akim Demaille [Wed, 5 Dec 2001 09:44:26 +0000 (09:44 +0000)] 
* src/conflicts.c (err_table): Remove.
(resolve_sr_conflict): Adjust.
* src/lalr.h (state_t.reduction_table, state_t.shift_table):
Rename as...
(state_t.reductions, state_t.shifts): this.

23 years ago* src/reduce.c (reduce_grammar_tables): No longer disable the
Akim Demaille [Wed, 5 Dec 2001 09:43:53 +0000 (09:43 +0000)] 
* src/reduce.c (reduce_grammar_tables): No longer disable the
removal of useless rules via CPP but via `if (0)', so that the
compiler still check the code is valid.
For instance, it should have noticed `rline' no longer exists: use
the `line' member of rule_t.
* src/gram.c (dummy, rline): Remove, unused.

23 years ago* src/output.c (pack_vector): Use assert, not berror.
Akim Demaille [Wed, 5 Dec 2001 09:43:21 +0000 (09:43 +0000)] 
* src/output.c (pack_vector): Use assert, not berror.
* src/main.c (berror): Remove, unused.

23 years agoNew experimental feature: if --verbose --trace output all the
Akim Demaille [Wed, 5 Dec 2001 09:41:15 +0000 (09:41 +0000)] 
New experimental feature: if --verbose --trace output all the
items of a state, not only its kernel.
* src/print.c (print_core): If `trace_flag', then invoke closure
before outputting the items of the state (print_core is no longer
a correct name them).
(print_results): Invoke new_closure/free_closure if needed.

23 years ago* src/LR0.c (new_itemsets): Use nshifts only, not shiftcount.
Akim Demaille [Wed, 5 Dec 2001 09:41:01 +0000 (09:41 +0000)] 
* src/LR0.c (new_itemsets): Use nshifts only, not shiftcount.
* src/closure.c, src/closure.h (itemsetsize): Rename as...
(nitemset): for consistency with the rest of the project.

23 years ago* src/closure.c (print_closure): Improve.
Akim Demaille [Wed, 5 Dec 2001 09:40:47 +0000 (09:40 +0000)] 
* src/closure.c (print_closure): Improve.
(closure): Use it for printing input and output.

23 years ago* src/closure.c (FIRSTS, FDERIVES): Adjust to reality: they are
Akim Demaille [Wed, 5 Dec 2001 09:40:31 +0000 (09:40 +0000)] 
* src/closure.c (FIRSTS, FDERIVES): Adjust to reality: they are
indexed by nonterminals.

23 years ago* src/warshall.c (TC, RTC): De-obsfucate (source reduced to 22% of
Akim Demaille [Wed, 5 Dec 2001 09:40:16 +0000 (09:40 +0000)] 
* src/warshall.c (TC, RTC): De-obsfucate (source reduced to 22% of
what it was!).
* src/warshall.h: Remove accidental duplication of the content.

23 years ago* src/closure.c (set_fderives): De-obfuscate.
Akim Demaille [Wed, 5 Dec 2001 09:40:00 +0000 (09:40 +0000)] 
* src/closure.c (set_fderives): De-obfuscate.

23 years ago* src/closure.c (print_firsts, print_fderives): De-obfuscate.
Akim Demaille [Wed, 5 Dec 2001 09:39:43 +0000 (09:39 +0000)] 
* src/closure.c (print_firsts, print_fderives): De-obfuscate.

23 years ago* src/closure.c (set_firsts): De-obfuscate.
Akim Demaille [Wed, 5 Dec 2001 09:39:27 +0000 (09:39 +0000)] 
* src/closure.c (set_firsts): De-obfuscate.

23 years ago* src/output.c (action_row): De-obfuscate
Akim Demaille [Wed, 5 Dec 2001 09:39:02 +0000 (09:39 +0000)] 
* src/output.c (action_row): De-obfuscate
using the good o' techniques: arrays not pointers, variable
locality, BITISSET, RESETBIT etc.

23 years agoAdd src/state.c to the repo.
Akim Demaille [Wed, 5 Dec 2001 09:38:44 +0000 (09:38 +0000)] 
Add src/state.c to the repo.

23 years agoFormatting changes.
Akim Demaille [Wed, 5 Dec 2001 09:35:55 +0000 (09:35 +0000)] 
Formatting changes.

23 years agoPessimize the code to simplify it: from now on, all the states
Akim Demaille [Wed, 5 Dec 2001 09:34:55 +0000 (09:34 +0000)] 
Pessimize the code to simplify it: from now on, all the states
have a valid SHIFTS, which NSHIFTS is possibly 0.
* src/LR0.c (shifts_new): Be global and move to..
* src/state.c, src/state.h: here.
* src/conflicts, src/lalr.c, src/output.c, src/print.c,
* src/print_graph: Adjust.

23 years ago* src/state.h (SHIFT_DISABLE, SHIFT_IS_DISABLED): New.
Akim Demaille [Wed, 5 Dec 2001 09:32:23 +0000 (09:32 +0000)] 
* src/state.h (SHIFT_DISABLE, SHIFT_IS_DISABLED): New.
* src/conflicts.c: Use it.
Restore a few missing `if (!SHIFT_IS_DISABLED)' which were
incorrectly ``simplified''.

23 years ago* src/conflicts.c (flush_shift, resolve_sr_conflict): De-obfuscate
Akim Demaille [Wed, 5 Dec 2001 09:32:00 +0000 (09:32 +0000)] 
* src/conflicts.c (flush_shift, resolve_sr_conflict): De-obfuscate
using the good o' techniques: arrays not pointers, variable
locality, BITISSET, RESETBIT etc.

23 years ago* src/state.h (SHIFT_SYMBOL): New.
Akim Demaille [Wed, 5 Dec 2001 09:31:46 +0000 (09:31 +0000)] 
* src/state.h (SHIFT_SYMBOL): New.
* src/conflicts.c: Use it to deobfuscate.

23 years ago* src/conflicts.c (count_sr_conflicts, count_rr_conflicts)
Akim Demaille [Wed, 5 Dec 2001 09:31:23 +0000 (09:31 +0000)] 
* src/conflicts.c (count_sr_conflicts, count_rr_conflicts)
(print_reductions): De-obfuscate using the good o' techniques:
arrays not pointers, variable locality, BITISSET.

23 years ago* src/conflicts.c (print_reductions): Arrays, not pointers.
Akim Demaille [Wed, 5 Dec 2001 09:31:09 +0000 (09:31 +0000)] 
* src/conflicts.c (print_reductions): Arrays, not pointers.
Use BITISSET.

23 years ago* src/conflicts.c (print_reductions): Pessimize, but clarify.
Akim Demaille [Wed, 5 Dec 2001 09:30:56 +0000 (09:30 +0000)] 
* src/conflicts.c (print_reductions): Pessimize, but clarify.

23 years ago* src/conflicts.c (print_reductions): Improve variable locality.
Akim Demaille [Wed, 5 Dec 2001 09:30:42 +0000 (09:30 +0000)] 
* src/conflicts.c (print_reductions): Improve variable locality.

23 years ago* src/conflicts.c (print_reductions): Pessimize, but clarify.
Akim Demaille [Wed, 5 Dec 2001 09:30:28 +0000 (09:30 +0000)] 
* src/conflicts.c (print_reductions): Pessimize, but clarify.

23 years ago* src/conflicts.c (print_reductions): Improve variable locality.
Akim Demaille [Wed, 5 Dec 2001 09:30:13 +0000 (09:30 +0000)] 
* src/conflicts.c (print_reductions): Improve variable locality.

23 years ago* src/state.h (SHIFT_IS_ERROR, SHIFT_IS_GOTO, SHIFT_IS_SHIFT): New.
Akim Demaille [Wed, 5 Dec 2001 09:30:00 +0000 (09:30 +0000)] 
* src/state.h (SHIFT_IS_ERROR, SHIFT_IS_GOTO, SHIFT_IS_SHIFT): New.
* src/lalr.c: Use them.

23 years ago* src/LR0.c (augment_automaton): Formatting changes.
Akim Demaille [Wed, 5 Dec 2001 09:29:33 +0000 (09:29 +0000)] 
* src/LR0.c (augment_automaton): Formatting changes.
Better variable locality.

23 years ago* src/lalr.c (matrix_print): New.
Akim Demaille [Wed, 5 Dec 2001 09:29:17 +0000 (09:29 +0000)] 
* src/lalr.c (matrix_print): New.
(transpose): Use it.
Use arrays instead of pointers.

23 years ago* src/lalr.c (maxrhs): Move to...
Akim Demaille [Wed, 5 Dec 2001 09:29:02 +0000 (09:29 +0000)] 
* src/lalr.c (maxrhs): Move to...
* src/gram.c, src/gram.h (ritem_longest_rhs): here.
* src/lalr.c (build_relations): Adjust.

23 years ago* src/lalr.c (transpose): Free the memory allocated to the
Akim Demaille [Wed, 5 Dec 2001 09:28:27 +0000 (09:28 +0000)] 
* src/lalr.c (transpose): Free the memory allocated to the
argument, as it is replaced by the results by the unique caller.
(build_relations): Merely invoke transpose: it handles the memory
deallocation.
Improve variable locality.
Avoid variables used as mere abbreviations.
(compute_lookaheads): Use arrays instead of pointers.

23 years ago* src/lalr.c (initialize_F): Improve variable locality.
Akim Demaille [Wed, 5 Dec 2001 09:28:13 +0000 (09:28 +0000)] 
* src/lalr.c (initialize_F): Improve variable locality.
Avoid variables used as mere abbreviations.

23 years ago* src/derives.c (print_derives): Display the ruleno.
Akim Demaille [Wed, 5 Dec 2001 09:28:00 +0000 (09:28 +0000)] 
* src/derives.c (print_derives): Display the ruleno.
* src/lalr.c (initialize_F, transpose): Better variable locality
to improve readability.
Avoid variables used as mere abbreviations.

23 years ago* src/lalr.c (traverse): Use arrays instead of pointers.
Akim Demaille [Wed, 5 Dec 2001 09:27:47 +0000 (09:27 +0000)] 
* src/lalr.c (traverse): Use arrays instead of pointers.

23 years ago* src/nullable.c (set_nullable): Use a for loop to de-obfuscate
Akim Demaille [Wed, 5 Dec 2001 09:27:35 +0000 (09:27 +0000)] 
* src/nullable.c (set_nullable): Use a for loop to de-obfuscate
the handling of squeue.
`symbol >= 0' is wrong now, use `rule_table[ruleno].useful'.

23 years agoBecause useless nonterminals are now kept alive (instead of being
Akim Demaille [Wed, 5 Dec 2001 09:27:23 +0000 (09:27 +0000)] 
Because useless nonterminals are now kept alive (instead of being
`destroyed'), we now sometimes examine them, and store information
related to them.  Hence we need to know their number, and adjust
memory allocations.
* src/reduce.c, src/reduce.h (nuseless_nonterminals): No longer
static.
* src/LR0.c (allocate_itemsets): The memory allocated to
`symbol_count' was used for two different purpose: once to count
the number of occurrences of each symbol, and later reassigned to
`shift_symbol', containing the symbol that can be shifted from a
given state.
Deobfuscate, i.e., allocate, use and free `symbol_count' here
only, and...
(new_itemsets): Allocate `shift_symbol' here.
(allocate_itemsets): symbol_count includes useless nonterminals.
Make room for them.
(free_storage): Use `free', not `XFREE', for pointers that cannot
be null.

23 years ago* src/nullable.c (set_nullable): Deobfuscate the handling of
Akim Demaille [Wed, 5 Dec 2001 09:27:08 +0000 (09:27 +0000)] 
* src/nullable.c (set_nullable): Deobfuscate the handling of
ritem.
`symbol >= 0' is wrong now, use `rule_table[ruleno].useful'.

23 years ago* src/gram.c, src/gram.h (ritem_print): New.
Akim Demaille [Wed, 5 Dec 2001 09:26:05 +0000 (09:26 +0000)] 
* src/gram.c, src/gram.h (ritem_print): New.
* src/gram.c (dummy): Remove, now there is actual code in gram.c.
(This useless function was defined only to work around VMS linkers
that can't handle compilation units with variables only).
* src/reduce.c (dump_grammar): Use it to trace the construction of
ritem.

23 years ago* src/bison.simple (union yyalloc): Change member names
Paul Eggert [Tue, 4 Dec 2001 14:10:51 +0000 (14:10 +0000)] 
* src/bison.simple (union yyalloc): Change member names
to be the same as the stack names.
(yyparse): yyptr is now union yyalloc *, not char *.
(YYSTACK_RELOCATE): Likewise.  This avoids a GCC warning,
and may generate better code on some machines.

23 years ago(union yyalloc): Change member names to be the same as the stack names.
Paul Eggert [Tue, 4 Dec 2001 14:10:07 +0000 (14:10 +0000)] 
(union yyalloc): Change member names to be the same as the stack names.
(YYPOINTER): Remove.
(yyparse): yyptr is now union yyalloc *, not char *.
(YYSTACK_RELOCATE): Likewise.  This avoids a GCC warning,
and may generate better code on some machines.

23 years ago* src/bison.simple (YYPOINTER): New macro.
Paul Eggert [Tue, 4 Dec 2001 13:29:59 +0000 (13:29 +0000)] 
* src/bison.simple (YYPOINTER): New macro.
(YYSTACK_RELOCATE): Use it to avoid a GCC warning.
(yystpcpy): Use prototype if __STDC__ is defined, not just
if __cplusplus is defined.

23 years ago(YYPOINTER): New macro.
Paul Eggert [Tue, 4 Dec 2001 13:29:27 +0000 (13:29 +0000)] 
(YYPOINTER): New macro.
(YYSTACK_RELOCATE): Use it to avoid a GCC warning.
(yystpcpy): Use prototype if __STDC__ is defined, not just
if __cplusplus is defined.

23 years ago* configure.in (WARNING_CFLAGS): Add -Werror when possible.
Akim Demaille [Fri, 30 Nov 2001 14:25:16 +0000 (14:25 +0000)] 
* configure.in (WARNING_CFLAGS): Add -Werror when possible.
(CFLAGS): Do not include the WARNING_CFLAGS here, since GNU
Gettext doesn't compile cleanly, and dies with -Werror.
* src/Makefile.am, lib/Makefile.am, tests/atlocal.in (CFLAGS):
Include WARNING_CFLAGS here.
* lib/xstrdup.c: Include xalloc.h, so that xstrdup be declared
before being defined.

23 years ago* lib/quotearg.h (quotearg_n, quotearg_n_style):
Akim Demaille [Fri, 30 Nov 2001 14:04:24 +0000 (14:04 +0000)] 
* lib/quotearg.h (quotearg_n, quotearg_n_style):
First arg is int, not unsigned.
* lib/quotearg.c (quotearg_n, quotearg_n_style): Likewise.
(SIZE_MAX, UINT_MAX): New macros.
(quotearg_n_options): Abort if N is negative.
Avoid overflow check on hosts where size_t is 64 bits and int
is 32 bits, as overflow is impossible there.
Fix off-by-one typo that caused unnecessary reallocation.

23 years agoName space cleanup in generated parser.
Akim Demaille [Fri, 30 Nov 2001 14:00:14 +0000 (14:00 +0000)] 
Name space cleanup in generated parser.
* doc/bison.texinfo (Bison Parser): Discuss system headers
and their effect on the user name space.
* src/bison.simple:
(YYSTACK_ALLOC, YYSTACK_FREE, union yyalloc, YYSTACK_GAP_MAX,
YYSTACK_BYTES, YYSTACK_RELOCATE): Do not define unless necessary,
i.e. unless ! defined (yyoverflow) || defined (YYERROR_VERBOSE).
(YYSIZE_T): New macro.  Use it instead of size_t, to avoid infringing
on user names when possible.
(YYSTACK_USE_ALLOCA): Do not define; just use any existing defn.
Simplify test for whather <alloca.h> exists.
(<stdlib.h>): Include if we will use malloc, and if standard C or C++.
(<stdio.h>): Include if YYDEBUG.
(yymemcpy): Renamed from __yy_memcpy.  Do not define unless
! defined (yyoverflow) && ! defined (yymemcpy).
(yymemcpy, yyparse): Rename local variables as needed so that
they all begin with 'yy'.
(yystrlen, yystpcpy): New functions.
(YY_DECL_NON_LSP_VARIABLES): Renamed from _YY_DECL_VARIABLES.
All uses changed.
(yyparse): size_t -> YYSIZE_T.  Use yystrlen and yystpcpy
instead of relying on string.h functions.  Use YYSTACK_ALLOC
and YYSTACK_FREE instead of malloc and free.

23 years ago* src/bison.simple (YYSTYPE, YYLTYPE): Move their definitions
Akim Demaille [Fri, 30 Nov 2001 11:23:29 +0000 (11:23 +0000)] 
* src/bison.simple (YYSTYPE, YYLTYPE): Move their definitions
before their first uses.
(YYBISON, YYPURE): Move to the top of the output.

23 years ago* tests/reduce.at (Useless Nonterminals): Fix.
Akim Demaille [Fri, 30 Nov 2001 11:15:02 +0000 (11:15 +0000)] 
* tests/reduce.at (Useless Nonterminals): Fix.

23 years ago* src/bison.simple (YYSTACK_FREE): Use `do {;} while (0)' as empty
Akim Demaille [Fri, 30 Nov 2001 11:11:34 +0000 (11:11 +0000)] 
* src/bison.simple (YYSTACK_FREE): Use `do {;} while (0)' as empty
if body instead of `;' to pacify GCC's warnings.

23 years agoInstead of mapping the LHS of unused rules to -1, keep the LHS
Akim Demaille [Fri, 30 Nov 2001 10:49:24 +0000 (10:49 +0000)] 
Instead of mapping the LHS of unused rules to -1, keep the LHS
valid, but flag the rules as invalid.
* src/gram.h (rule_t): `useful' is a new member.
* src/print.c (print_grammar): Adjust.
* src/derives.c (set_derives): Likewise.
* src/reader.c (packgram, reduce_output): Likewise.
* src/reduce.c (reduce_grammar_tables): Likewise.
* tests/reduce.at (Underivable Rules, Useless Rules): New.

23 years ago* src/reduce.c (reduce_output): Formatting changes.
Akim Demaille [Fri, 30 Nov 2001 10:49:01 +0000 (10:49 +0000)] 
* src/reduce.c (reduce_output): Formatting changes.
* src/print.c (print_results, print_grammar): Likewise.
* tests/regression.at (Rule Line Numbers)
(Solved SR Conflicts, Unresolved SR Conflicts): Adjust.

23 years ago* src/reduce.c (nonterminals_reduce): Instead of throwing away
Akim Demaille [Fri, 30 Nov 2001 10:48:14 +0000 (10:48 +0000)] 
* src/reduce.c (nonterminals_reduce): Instead of throwing away
useless nonterminals, move them at the end of the symbol arrays.
(reduce_output): Adjust.
* tests/reduce.at (Useless Nonterminals): Adjust.

23 years ago* src/reduce.c: Various comment/formatting changes.
Akim Demaille [Fri, 30 Nov 2001 10:47:56 +0000 (10:47 +0000)] 
* src/reduce.c: Various comment/formatting changes.
(nonterminals_reduce): New, extracted from...
(reduce_grammar_tables): here.
(reduce_grammar): Call nonterminals_reduce.

23 years ago* src/bison.simple (YYSTACK_REALLOC): Remove.
Paul Eggert [Fri, 30 Nov 2001 02:56:45 +0000 (02:56 +0000)] 
* src/bison.simple (YYSTACK_REALLOC): Remove.
(YYSTACK_ALLOC): Resurrect this macro, with its old meaning.
(YYSTACK_FREE, YYSTACK_GAP_MAX, YYSTACK_BYTES, YYSTACK_RELOCATE):
New macros.
(union yyalloc): New type.
(__yy_memcpy): Last arg is size_t, not unsigned int, to remove
an arbitrary restriction on hosts where size_t is wider than int.

(yyparse): Don't dump core if alloca or malloc fails; instead, report
a parser stack overflow.  Allocate just one block of memory for all
three stacks, instead of allocating three blocks; this typically is
faster and reduces fragmentation.

Do not limit the number of items in the stack to a value that fits
in 'int', as this is an arbitrary limit on hosts with 64-bit
size_t and 32-bit int.

23 years ago(YYSTACK_REALLOC): Remove.
Paul Eggert [Fri, 30 Nov 2001 02:54:54 +0000 (02:54 +0000)] 
(YYSTACK_REALLOC): Remove.
(YYSTACK_ALLOC): Resurrect this macro, with its old meaning.
(YYSTACK_FREE, YYSTACK_GAP_MAX, YYSTACK_BYTES, YYSTACK_RELOCATE):
New macros.
(union yyalloc): New type.
(__yy_memcpy): Last arg is size_t, not unsigned int, to remove
an arbitrary restriction on hosts where size_t is wider than int.

(yyparse): Don't dump core if alloca or malloc fails; instead, report
a parser stack overflow.  Allocate just one block of memory for all
three stacks, instead of allocating three blocks; this typically is
faster and reduces fragmentation.

Do not limit the number of items in the stack to a value that fits
in 'int', as this is an arbitrary limit on hosts with 64-bit
size_t and 32-bit int.

23 years agoUpdate.
Marc Autret [Thu, 29 Nov 2001 20:52:44 +0000 (20:52 +0000)] 
Update.