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12002-01-08 Akim Demaille <akim@epita.fr>
2
3 * lib/basename.c, lib/dirname.h, lib/dirname.c, lib/memrchr.c:
4 New, stolen from the Fileutils 4.1.
5 * lib/Makefile.am (libbison_a_SOURCES): Adjust.
6 * configure.in: Check for the presence of memrchr, and of its
7 prototype.
8
92002-01-07 Tim Van Holder <tim.van.holder@pandora.be>
10
11 * lib/hash.h (__P): Added definition for this macro.
12 * src/Makefile.am: Add parse-skel.c and scan-skel.c to
13 BUILT_SOURCES, to ensure they are generated first.
14 * src/parse-skel.y: Use YYERROR_VERBOSE instead of
15 %error-verbose to allow bootstrapping with bison 1.30x.
16
172002-01-06 Akim Demaille <akim@epita.fr>
18
19 * src/reader.c (parse_braces): Don't fetch the next char, the
20 convention is to fetch on entry.
21 * tests/torture.at (GNU Cim Grammar): Reintroduce their weird
22 'switch' without a following semicolon.
23 * tests/regression.at (braces parsing): New.
24
252002-01-06 Akim Demaille <akim@epita.fr>
26
27 Bison is dead wrong in its RR conflict reports.
28
29 * tests/torture.at (GNU Cim Grammar): New.
30 * src/conflicts.c (count_rr_conflicts): Fix.
31
322002-01-06 Akim Demaille <akim@epita.fr>
33
34 Creating package.m4 from configure.ac causes too many problems.
35
36 * tests/Makefile.am (package.m4): Create it by hand,
37 AC_CONFIG_TESTDIR no longer does in the most recent CVS Autoconf.
38
392002-01-06 Akim Demaille <akim@epita.fr>
40
41 * src/Makefile.am (bison_SOURCES): Add parse-skel.h and
42 skeleton.h.
43
442002-01-04 Paul Eggert <eggert@twinsun.com>
45
46 * doc/bison.texinfo (Debugging):
47 Remove YYSTDERR; it's no longer defined or used.
48 Also, s/cstdio.h/cstdio/.
49
502002-01-03 Akim Demaille <akim@epita.fr>
51
52 * tests/bison.in, tests/atlocal.in: Adjust to CVS Autoconf.
53
542002-01-03 Akim Demaille <akim@epita.fr>
55
56 * src/parse-skel.y (process_skeleton): Don't bind the parser's
57 tracing code to --trace, wait for a better --trace option, with
58 args.
59
602002-01-03 Akim Demaille <akim@epita.fr>
61
62 * src/bison.simple (YYSTDERR): Remove, replace `stderr'.
63 The ISO C++ standard is extremely clear about it: stderr is
64 considered a macro, not a regular symbol (see table 94 `Header
65 <cstdio> synopsis', [lib.c.files] 27.8.2 C Library files).
66 Therefore std:: does not apply to it. It still does with fprintf.
67 Also, s/cstdio.h/cstdio/.
68
692002-01-03 Akim Demaille <akim@epita.fr>
70
71 * lib/quotearg.c: Use `#include "..."' instead of `#include <...>'
72 for non system headers.
73
742002-01-02 Akim Demaille <akim@epita.fr>
75
76 Equip the skeleton chain with location tracking, runtime trace,
77 pure parser and scanner.
78
79 * src/parse-skel.y: Request a pure parser, locations, and prefix
80 renaming.
81 (%union): Having several members with the same type does not help
82 type mismatches, simplify.
83 (YYPRINT, yyprint): New.
84 (yyerror): ``Rename'' (there is a #define yyerror skel_error) as...
85 (skel_error): this.
86 Handle locations.
87 * src/scan-skel.l: Adjust to these changes.
88 * src/skeleton.h (LOCATION_RESET, LOCATION_LINES, LOCATION_STEP)
89 (LOCATION_PRINT, skel_control_t): New.
90
912001-12-30 Akim Demaille <akim@epita.fr>
92
93 * src/parse-skel.y: Get rid of the shift/reduce conflict:
94 replace `gb' with BLANKS.
95 * src/scan-skel.l: Adjust.
96
972001-12-30 Akim Demaille <akim@epita.fr>
98
99 * src/system.h: We don't need nor want bcopy.
100 Throw away MS-DOS crap: we don't need getpid.
101 * configure.in: We don't need strndup. It was even causing
102 problems: because Flex includes the headers *before* us,
103 _GNU_SOURCE is not defined by config.h, and therefore strndup was
104 not visible.
105 * lib/xstrndup.c: New.
106 * src/scan-skel.l: Use it.
107 Be sure to initialize yylval.muscle member when scanning a MUSCLE.
108 * src/parse-skel.y: Use %directives instead of #defines.
109
1102001-12-30 Akim Demaille <akim@epita.fr>
111
112 * src/skeleton.h: New.
113 * src/output.c (output_parser, output_master_parser): Remove, dead
114 code.
115 * src/output.h (get_lines_number, actions_output, guards_output)
116 (token_definitions_output): Prototype them.
117 * src/parse-skel.y: Add the license notice.
118 Include output.h and skeleton.h.
119 (process_skeleton): Returns void, and takes a single parameter.
120 * src/scan-skel.l: Add the license notice.
121 Include skeleton.h.
122 Don't use %option yylineno: it seems that then Flex imagines
123 REJECT has been used, and therefore it won't reallocate its
124 buffers (which makes no other sense to me than a bug). It results
125 in warnings for `unused: yy_flex_realloc'.
126
1272001-12-30 Robert Anisko <robert.anisko@epita.fr>
128
129 * src/muscle_tab.h (MUSCLE_INSERT_INT, MUSCLE_INSERT_STRING)
130 (MUSCLE_INSERT_PREFIX): ...to there.
131 * src/output.c (MUSCLE_INSERT_INT, MUSCLE_INSERT_STRING)
132 (MUSCLE_INSERT_PREFIX): Move from here...
133
134 * src/bison.hairy: Add a section directive. Put braces around muscle
135 names. This parser skeleton is still broken, but Bison should not
136 choke on a bad muscle 'syntax'.
137 * src/bison.simple: Add a section directive. Put braces around muscle
138 names.
139
140 * src/files.h (strsuffix, stringappend): Add declarations.
141 (tab_extension): Add declaration.
142 (short_base_name): Add declaration.
143
144 * src/files.c (strsuffix, stringappend): No longer static. These
145 functions are used in the skeleton parser.
146 (tab_extension): New.
147 (compute_base_names): Use the computations done in this function
148 to guess if the generated parsers should have '.tab' in their
149 names.
150 (short_base_name): No longer static.
151
152 * src/output.c (output_skeleton): New.
153 (output): Disable call to output_master_parser, and give a try to
154 a new skeleton handling system.
155 (guards_output, actions_output): No longer static.
156 (token_definitions_output, get_lines_number): No longer static.
157
158 * configure.in: Use AM_PROG_LEX and AC_PROG_YACC.
159
160 * src/Makefile.am (bison_SOURCES): Add scan-skel.l and
161 parse-skel.y.
162
163 * src/parse-skel.y: New file.
164 * src/scan-skel.l: New file.
165
1662001-12-29 Akim Demaille <akim@epita.fr>
167
168 %name-prefix is broken.
169
170 * src/files.c (spec_name_prefix): Initialize to NULL, not to "yy".
171 Adjust all dependencies.
172 * tests/headers.at (export YYLTYPE): Strengthen this test: use
173 %name-prefix.
174
175 Renaming yylval but not yylloc is not consistent. Now we do.
176
177 * src/bison.simple: Prefix yylloc if used.
178 * doc/bison.texinfo (Decl Summary): Document that.
179
1802001-12-29 Akim Demaille <akim@epita.fr>
181
182 * doc/bison.texinfo: Promote `%long-directive' over
183 `%long_directive'.
184 Remove all references to fixed-output-files, yacc is enough.
185
1862001-12-29 Akim Demaille <akim@epita.fr>
187
188 * src/bison.simple: Define YYDEBUG and YYERROR_VERBOSE *after* the
189 user prologue. These are defaults.
190 * tests/actions.at (Mid-rule actions): Make sure the user can
191 define YYDEBUG and YYERROR_VERBOSE.
192
1932001-12-29 Akim Demaille <akim@epita.fr>
194
195 * src/output.c (header_output): Don't forget to export YYLTYPE and
196 yylloc.
197 * tests/headers.at (export YYLTYPE): New, make sure it does.
198 * tests/regression.at (%union and --defines, Invalid CPP headers):
199 Move to...
200 * tests/headers.at: here.
201
2022001-12-29 Akim Demaille <akim@epita.fr>
203
204 * src/gram.h (rule_s): Member `assoc' is of type `associativity'.
205
2062001-12-29 Akim Demaille <akim@epita.fr>
207
208 * tests/actions.at (Mid-rule actions): Output on a single line
209 instead of several.
210
2112001-12-29 Akim Demaille <akim@epita.fr>
212
213 * doc/bison.texinfo: Formatting changes.
214
2152001-12-29 Akim Demaille <akim@epita.fr>
216
217 Don't store the token defs in a muscle, just be ready to output it
218 on command. Now possible via `symbols'. Fixes a memory leak.
219
220 * src/output.c (token_definitions_output): New.
221 (output_parser, header_output): Use it.
222 * src/reader.c (symbols_save): Remove.
223
2242001-12-29 Akim Demaille <akim@epita.fr>
225
226 * src/bison.simple: Do not provide a default for YYSTYPE and
227 YYLTYPE before the user's prologue. Otherwise it's hardly... a
228 default.
229
2302001-12-29 Akim Demaille <akim@epita.fr>
231
232 Mid-rule actions are simply... ignored!
233
234 * src/reader.c (readgram): Be sure to attach mid-rule actions to
235 the empty-rule associated to the dummy symbol, not to the host
236 rule.
237 * tests/actions.at (Mid-rule actions): New.
238
2392001-12-29 Akim Demaille <akim@epita.fr>
240
241 Memory leak.
242
243 * src/reader.c (reader): Free grammar.
244
2452001-12-29 Akim Demaille <akim@epita.fr>
246
247 Memory leak.
248
249 * src/LR0.c (new_itemsets): Don't allocate `shift_symbol' here,
250 since it allocates it for each state, although only one is needed.
251 (allocate_storage): Do it here.
252
2532001-12-29 Akim Demaille <akim@epita.fr>
254
255 * src/options.h, src/options.c (create_long_option_table): Rename
256 as...
257 (long_option_table_new): this, with a clearer prototype.
258 (percent_table): Remove, unused,
259 * src/getargs.c (getargs): Adjust.
260
2612001-12-29 Akim Demaille <akim@epita.fr>
262
263 * src/LR0.c, src/conflicts.c, src/lalr.c, src/lalr.h, src/output.c
264 * src/print.c, src/print_graph.c, src/state.h: Rename state_table
265 as states.
266
2672001-12-29 Akim Demaille <akim@epita.fr>
268
269 * src/lalr.c (build_relations): Rename `states' as `states1'.
270 Sorry, I don't understand exactly what it is, no better name...
271
2722001-12-29 Akim Demaille <akim@epita.fr>
273
274 * src/closure.c, src/conflicts.c, src/derives.c, src/gram.c
275 * src/gram.h, src/lalr.c, src/nullable.c, src/output.c, src/print.c
276 * src/print_graph.c, src/reader.c, src/reduce.c: Rename rule_table
277 as rules.
278
2792001-12-29 Akim Demaille <akim@epita.fr>
280
281 * src/gram.c (rprec, rprecsym, rassoc): Remove, unused since long
282 ago.
283
2842001-12-29 Akim Demaille <akim@epita.fr>
285
286 * src/reader.c, src/reader.h (user_toknums): Remove.
287 Adjust all users to use symbols[i]->user_token_number.
288
2892001-12-29 Akim Demaille <akim@epita.fr>
290
291 * src/gram.c, src/gram.h (sprec, sassoc): Remove.
292 Adjust all users to use symbols[i]->prec or ->assoc.
293
2942001-12-29 Akim Demaille <akim@epita.fr>
295
296 * src/reader.c, src/reader.h (tags): Remove.
297 Adjust all users to use symbols[i]->tag.
298
2992001-12-29 Akim Demaille <akim@epita.fr>
300
301 * src/gram.h, src/gram.c (symbols): New, similar to state_table
302 and rule_table.
303 * src/reader.c (packsymbols): Fill this table.
304 Drop sprec.
305 * src/conflicts.c (resolve_sr_conflict): Adjust.
306 * src/reduce.c (reduce_grammar): Adjust: just sort symbols, a
307 single table.
308 Use symbols[i]->tag instead of tags[i].
309
3102001-12-29 Akim Demaille <akim@epita.fr>
311
312 * tests/calc.at (_AT_DATA_CALC_Y): Also use %union.
313 In addition, put a comment in there, to replace...
314 * tests/regression.at (%union and C comments): Remove.
315
3162001-12-29 Akim Demaille <akim@epita.fr>
317
318 * tests/regression.at (Web2c Actions): Blindly move the actual
319 output as expected output. The contents *seem* right to me, but I
320 can't pretend reading perfectly parser tables... Nonetheless, all
321 the other tests pass correctly, the table look OK, even though the
322 presence of `$axiom' is to be noted: AFAICS it is useless (but
323 harmless).
324
3252001-12-29 Akim Demaille <akim@epita.fr>
326
327 * src/reader.c (readgram): Don't add the rule 0 if there were no
328 rules read. In other words, add it _after_ having performed
329 grammar sanity checks.
330 Fixes the `tests/regression.at (Invalid input: 1)' Failure.
331
3322001-12-29 Akim Demaille <akim@epita.fr>
333
334 * tests/regression.at (Web2c Report): Catch up: the rule 0 is now
335 visible, and some states have now a different number.
336
3372001-12-29 Akim Demaille <akim@epita.fr>
338
339 * src/reader.c (readgram): Bind the initial rule's lineno to that
340 of the first rule.
341 * tests/regression.at (Rule Line Numbers, Unresolved SR Conflicts):
342 (Solved SR Conflicts): Adjust rule 0's line number.
343
3442001-12-29 Akim Demaille <akim@epita.fr>
345
346 Fix the `GAWK Grammar' failure.
347
348 * src/LR0.c (final_state): Initialize to -1 so that we do compute
349 the reductions of the first state which was mistakenly confused
350 with the final state because precisely final_state was initialized
351 to 0.
352 * tests/sets.at (Nullable): Adjust: state 0 does have lookaheads,
353 now noticed by Bison.
354 * tests/regression.at (Rule Line Numbers): Adjust: state 0 does
355 have a reduction on $default.
356
3572001-12-29 Akim Demaille <akim@epita.fr>
358
359 * src/gram.c (ritem_print): Be sure to subtract 1 when displaying
360 rule line numbers.
361 * src/closure.c (print_closure): Likewise.
362 * src/derives.c (print_derives): Likewise.
363 * tests/sets.at (Nullable): Adjust: the rule numbers are correct
364 now.
365
3662001-12-29 Akim Demaille <akim@epita.fr>
367
368 * src/lalr.c (lookaheads_print): New.
369 (lalr): Call it when --trace-flag.
370 * tests/sets.at (Nullable): Adjust: when tracing, the lookaheads
371 are dumped.
372
3732001-12-29 Akim Demaille <akim@epita.fr>
374
375 * src/derives.c (print_derives): Be sure to use `>= 0', not `> 0',
376 when walking through ritem, even via rule->rhs.
377 * src/reduce.c (dump_grammar, useful_production, reduce_output)
378 (useful_production, useless_nonterminals): Likewise.
379 (reduce_grammar_tables): Likewise, plus update nritems.
380 * src/nullable.c (set_nullable): Likewise.
381 * src/lalr.c (build_relations): Likewise.
382 * tests/sets.at (Nullable): Adjust.
383 Fortunately, now, the $axiom is no longer nullable.
384
3852001-12-29 Akim Demaille <akim@epita.fr>
386
387 * src/LR0.c (generate_states): Use nritems, not nitems, nor using
388 the 0-sentinel.
389 * src/gram.c (ritem_longest_rhs): Likewise.
390 * src/reduce.c (nonterminals_reduce): Likewise.
391 * src/print_graph.c (print_graph): Likewise.
392 * src/output.c (output_rule_data): Likewise.
393 * src/nullable.c (set_nullable): Likewise.
394
3952001-12-29 Akim Demaille <akim@epita.fr>
396
397 * src/output.c: Comment changes.
398
3992001-12-27 Paul Eggert <eggert@twinsun.com>
400
401 * src/bison.simple (YYSTACK_ALLOC, YYSIZE_T): Remove special
402 cases for non-GNU systems like AIX, HP-UX, SGI, Sun, and
403 Sparc, as they were causing more porting problems than the
404 (minor) performance improvement was worth.
405
406 Also, catch up with 1.31's YYSTD.
407
4082001-12-27 Akim Demaille <akim@epita.fr>
409
410 * src/output.c (output_gram): Rely on nritems, not the
411 0-sentinel. See below.
412 Use -1 as separator, not 0.
413 * src/bison.simple (yyparse): Subtract 1 to the rule numbers.
414 Rely on -1 as separator in yyrhs, instead of 0.
415 * tests/calc.at (AT_CHECK_CALC): Now, the parsers no longer issue
416 twice `Now at end of input', therefore there are two lines less to
417 expect.
418
4192001-12-27 Akim Demaille <akim@epita.fr>
420
421 * tests/regression.at (Unresolved SR Conflicts):
422 (Solved SR Conflicts, Rule Line Numbers): Adjust to the changes
423 below.
424
4252001-12-27 Akim Demaille <akim@epita.fr>
426
427 * src/LR0.c (new_state): Recognize the final state by the fact it
428 is reached by eoftoken.
429 (insert_start_shifting_state, insert_eof_shifting_state)
430 (insert_accepting_state, augment_automaton): Remove, since now
431 these states are automatically computed from the initial state.
432 (generate_states): Adjust.
433 * src/print.c: When reporting a rule number to the user, substract
434 1, so that the axiom rule is rule 0, and the first user rule is 1.
435 * src/reduce.c: Likewise.
436 * src/print_graph.c (print_core): For the time being, just as for
437 the report, depend upon --trace-flags to dump the full set of
438 items.
439 * src/reader.c (readgram): Once the grammar read, insert the rule
440 0: `$axiom: START-SYMBOL $'.
441 * tests/set.at: Adjust: rule 0 is now displayed, and since the
442 number of the states has changed (the final state is no longer
443 necessarily the last), catch up.
444
4452001-12-27 Akim Demaille <akim@epita.fr>
446
447 Try to make the use of the eoftoken valid. Given that its value
448 is 0 which was also used as a sentinel in ritem, (i) make sure >= 0
449 is used instead of > 0 where appropriate, (ii), depend upon nritems
450 instead of the 0-sentinel.
451
452 * src/gram.h, src/gram.c (nritems): New.
453 Expected to be duplication of nitems, but for the time being...
454 * src/reader.c (packgram): Assert nritems and nitems are equal.
455 * src/LR0.c (allocate_itemsets, new_itemsets): Adjust.
456 * src/closure.c (print_closure, print_fderives): Likewise.
457 * src/gram.c (ritem_print): Likewise.
458 * src/print.c (print_core, print_grammar): Likewise.
459 * src/print_graph.c: Likewise.
460
4612001-12-27 Akim Demaille <akim@epita.fr>
462
463 * src/main.c (main): If there are complains after grammar
464 reductions, then output the report anyway if requested, then die.
465 * src/symtab.c (bucket_new): Initialize `value' to -1, not 0.
466 * src/reader.c (eoftoken): New.
467 (parse_token_decl): If the token being defined has value `0', it
468 is the eoftoken.
469 (packsymbols): No longer hack `tags' to insert `$' by hand.
470 Be sure to preserve the value of the eoftoken.
471 (reader): Make sure eoftoken is defined.
472 Initialize nsyms to 0: now eoftoken is created just like the others.
473 * src/print.c (print_grammar): Don't special case the eof token.
474 * src/regression.at: Adjust: `$' has value 0, not -1, which was a
475 lie anyway, albeit pleasant.
476 * tests/calc.at: Exercise error messages with eoftoken.
477 Change the grammar so that empty input is invalid.
478 Adjust expectations.
479 When yyungeting, be sure to use a valid yylloc: use last_yylloc.
480
4812001-12-27 Akim Demaille <akim@epita.fr>
482
483 * configure.in: Check the protos of strchr ans strspn.
484 Replace strchr if needed.
485 * src/system.h: Provide the protos of strchr, strspn and memchr if
486 missing.
487 * lib/strchr.c: New.
488 * src/reader.c (symbols_save): Use strchr.
489
4902001-12-27 Akim Demaille <akim@epita.fr>
491
492 * src/print.c, src/print_graph.c (escape): New.
493 Use it to quote the TAGS outputs.
494 * src/print_graph.c (print_state): Now errors are in red, and
495 reductions in green.
496 Prefer high to wide: output the state number on a line of its own.
497
4982001-12-27 Akim Demaille <akim@epita.fr>
499
500 * src/state.h, src/state.c (reductions_new): New.
501 * src/LR0.c (set_state_table): Let all the states have a
502 `reductions', even if reduced to 0.
503 (save_reductions): Adjust.
504 * src/lalr.c (initialize_LA, initialize_lookaheads): Adjust.
505 * src/print.c (print_reductions, print_actions): Adjust.
506 * src/output.c (action_row): Adjust.
507
5082001-12-27 Akim Demaille <akim@epita.fr>
509
510 * src/state.h, src/state.c (errs_new, errs_dup): New.
511 * src/LR0.c (set_state_table): Let all the states have an errs,
512 even if reduced to 0.
513 * src/print.c (print_errs, print_reductions): Adjust.
514 * src/output.c (output_actions, action_row): Adjust.
515 * src/conflicts.c (resolve_sr_conflict): Adjust.
516
5172001-12-27 Akim Demaille <akim@epita.fr>
518
519 * src/lalr.c (set_goto_map, initialize_F): Use SHIFT_SYMBOL.
520
5212001-12-27 Akim Demaille <akim@epita.fr>
522
523 * src/conflicts.c, src/conflicts.h (print_reductions): Move to...
524 * src/print.c: here.
525 (lookaheadset, shiftset): New, used as additional storage by
526 print_reductions.
527 (print_results): Adjust.
528 (print_shifts, print_gotos, print_errs): New, extracted from...
529 (print_actions): here.
530 * src/print_graph.c (print_actions): Remove dead code.
531
5322001-12-27 Akim Demaille <akim@epita.fr>
533
534 * src/reader.c (copy_dollar, copy_at): Better checking of `n' in
535 `$n' and `@n'.
536
5372001-12-27 Akim Demaille <akim@epita.fr>
538
539 * src/lalr.c (add_lookback_edge): Use state_t instead of ints.
540 (build_relations): Adjust.
541
5422001-12-27 Akim Demaille <akim@epita.fr>
543
544 * src/lalr.c (set_goto_map): Remove a wrong but benign loop
545 duplication.
546
5472001-12-27 Akim Demaille <akim@epita.fr>
548
549 * src/reader.c (packgram): Catch nitems overflows.
550
5512001-12-27 Akim Demaille <akim@epita.fr>
552
553 * src/files.c, src/files.h (guard_obstack): Remove.
554 * src/output.c (output): Adjust.
555 * src/reader.c (parse_braces): New, factoring...
556 (copy_action, copy_guard): these two which are renamed as...
557 (parse_action, parse_guard): these.
558 As a voluntary consequence, using braces around guards is now
559 mandatory.
560
5612001-12-27 Akim Demaille <akim@epita.fr>
562
563 * src/gram.h (rule_t): `guard' and `guard_line' are new members.
564 * src/reader.c (symbol_list): `guard' and `guard_line' are new
565 members.
566 (symbol_list_new): Adjust.
567 (copy_action): action_line is the first line, not the last.
568 (copy_guard): Just as for actions, store the `action' only, not
569 the switch/case/break flesh.
570 Don't parse the user action that might follow the guard, let...
571 (readgram): do it, i.e., now, there can be an action after a
572 guard.
573 In other words the guard is just explicitly optional.
574 (packgram): Adjust.
575 * src/output.c (guards_output): New.
576 (output_parser): Call it when needed.
577 (output): Also free the guard and attrs obstacks.
578 * src/files.c, src/files.h (obstack_save): Remove.
579 (output_files): Remove.
580 As a result, if one needs the former `.act' file, using an
581 appropriate skeleton which requires actions and guards is now
582 required.
583 * src/main.c (main): Adjust.
584 * tests/semantic.at: New.
585 * tests/regression.at: Use `input.y' as input file name.
586 Avoid 8+3 problems by requiring input.c when the test needs the
587 parser.
588
5892001-12-27 Akim Demaille <akim@epita.fr>
590
591 * src/reader.c (symbol_list_new): Be sure to initialize all the
592 fields.
593
5942001-12-27 Akim Demaille <akim@epita.fr>
595
596 All the hacks using a final pseudo state are now useless.
597
598 * src/LR0.c (set_state_table): state_table holds exactly nstates.
599 * src/lalr.c (nLA): New.
600 (initialize_LA, compute_lookaheads, initialize_lookaheads): Use it
601 instead of lookaheadsp from the pseudo state (nstate + 1).
602
6032001-12-27 Akim Demaille <akim@epita.fr>
604
605 * src/output.c (action_row, token_actions): Use a state_t instead
606 of a integer, and nlookaheads instead of the following state's
607 lookaheadsp.
608
6092001-12-27 Akim Demaille <akim@epita.fr>
610
611 * src/conflicts.c (log_resolution, flush_shift)
612 (resolve_sr_conflict, set_conflicts, solve_conflicts)
613 (count_sr_conflicts, count_rr_conflicts, conflicts_output)
614 (conflicts_print, print_reductions): Use a state_t instead of an
615 integer when referring to a state.
616 As much as possible, depend upon nlookaheads, instead of the
617 `lookaheadsp' member of the following state (since lookaheads of
618 successive states are successive, the difference between state n + 1
619 and n served as the number of lookaheads for state n).
620 * src/lalr.c (add_lookback_edge): Likewise.
621 * src/print.c (print_core, print_actions, print_state)
622 (print_results): Likewise.
623 * src/print_graph.c (print_core, print_actions, print_state)
624 (print_graph): Likewise.
625 * src/conflicts.h: Adjust.
626
6272001-12-27 Akim Demaille <akim@epita.fr>
628
629 * src/bison.hairy: Formatting/comment changes.
630 ANSIfy.
631 Remove `register' indications.
632 Add plenty of `static'.
633
6342001-12-27 Akim Demaille <akim@epita.fr>
635
636 * src/output.c (prepare): Drop the muscle `ntbase' which
637 duplicates ntokens.
638 * src/bison.simple: Formatting/comment changes.
639 Use YYNTOKENS only, which is documented, but not YYNTBASE, which
640 is an undocumented synonym.
641
6422001-12-22 Akim Demaille <akim@epita.fr>
643
644 * src/output.c (output_table_data): Change the prototype to use
645 `int' for array ranges: some invocations do pass an int, not a
646 short.
647 Reported by Wayne Green.
648
6492001-12-22 Akim Demaille <akim@epita.fr>
650
651 Some actions of web2c.y are improperly triggered.
652 Reported by Mike Castle.
653
654 * src/lalr.c (traverse): s/F (i)[k] = F (j)[k]/F (j)[k] = F (i)[k]/.
655 * tests/regression.at (Web2c): Rename as...
656 (Web2c Report): this.
657 (Web2c Actions): New.
658
6592001-12-22 Akim Demaille <akim@epita.fr>
660
661 Reductions in web2c.y are improperly reported.
662 Reported by Mike Castle.
663
664 * src/conflicts.c (print_reductions): Fix.
665 * tests/regression.at (Web2c): New.
666
6672001-12-18 Akim Demaille <akim@epita.fr>
668
669 Some host fail on `assert (!"foo")', which expands to
670 ((!"foo") ? (void)0 : __assert("!"foo."", __FILE__, __LINE__))
671 Reported by Nelson Beebee.
672
673 * src/output.c, src/vcg.c: Replace `assert (!"it succeeded")' with
674 `#define it_succeeded 0' and `assert (it_succeeded)'.
675
6762001-12-17 Marc Autret <autret_m@epita.fr>
677
678 * src/bison.simple: Don't hard code the skeleton line and filename.
679 * src/output.c (output_parser): Rename 'line' as 'output_line'.
680 New line counter 'skeleton_line' (skeleton-line muscle).
681
6822001-12-17 Paul Eggert <eggert@twinsun.com>
683
684 * NEWS, doc/bison.texinfo, doc/bison.1, doc/bison.rnh: Document that
685 YYDEBUG must be defined to a nonzero value.
686
687 * src/bison.simple (yytname): Do not assume that the user defines
688 YYDEBUG to a properly parenthesized expression.
689
6902001-12-17 Akim Demaille <akim@epita.fr>
691
692 * src/state.h (state_t): Rename lookaheads as lookaheadsp.
693 nlookaheads is a new member.
694 Adjust all users.
695 * src/lalr.h (nlookaheads): Remove this orphan declaration.
696 * src/lalr.c (initialize_lookaheads): Set nlookaheads for each
697 state.
698
6992001-12-17 Akim Demaille <akim@epita.fr>
700
701 * src/files.h, src/files.c (open_files, close_files): Remove.
702 * src/main.c (main): Don't open/close files, nor invoke lex_free,
703 let...
704 * src/reader.c (reader): Do it.
705
7062001-12-17 Akim Demaille <akim@epita.fr>
707
708 * src/conflicts.c (print_reductions): Formatting changes.
709
7102001-12-17 Akim Demaille <akim@epita.fr>
711
712 * src/conflicts.c (flush_shift): Also adjust lookaheadset.
713 (flush_reduce): New.
714 (resolve_sr_conflict): Adjust.
715
7162001-12-17 Akim Demaille <akim@epita.fr>
717
718 * src/output.c (output_obstack): Be static and rename as...
719 (format_obstack): this, to avoid any confusion with files.c's
720 output_obstack.
721 * src/reader.h (muscle_obstack): Move to...
722 * src/output.h: here, since it's defined in output.c.
723
7242001-12-17 Akim Demaille <akim@epita.fr>
725
726 * src/output.c (action_row, save_column, default_goto)
727 (sort_actions, matching_state, pack_vector): Better variable
728 locality.
729
7302001-12-17 Akim Demaille <akim@epita.fr>
731
732 * src/output.c: Various formatting changes.
733
7342001-12-17 Akim Demaille <akim@epita.fr>
735
736 * src/files.c (output_files): Free the output_obstack.
737 * src/main.c (main): Call print and print_graph conditionally.
738 * src/print.c (print): Work unconditionally.
739 * src/print_graph.c (print_graph): Work unconditionally.
740 * src/conflicts.c (log_resolution): Output only if verbose_flag.
741
7422001-12-16 Marc Autret <autret_m@epita.fr>
743
744 * src/output.c (actions_output): Fix. When we use %no-lines,
745 there is one less line per action.
746
7472001-12-16 Marc Autret <autret_m@epita.fr>
748
749 * src/bison.simple: Remove a useless #line directive.
750 s/#line %%line %%skeleton/#line %%line "%%parser-file-name"/'.
751 * src/output.c (get_lines_number): New.
752 (output_parser): Adjust, now takes care about the lines of a
753 output muscles.
754 Fix line numbering.
755 (actions_output): Computes the number of lines taken by actions.
756 (output_master_parser): Insert new skeleton which is the name of
757 the output parser file name.
758
7592001-12-15 Marc Autret <autret_m@epita.fr>
760
761 * src/bison.simple [YYERROR_VERBOSE]: Restore backward compatibility.
762
7632001-12-15 Marc Autret <autret_m@epita.fr>
764
765 * src/output.c (output_gram): Keep track of the hairy one.
766
7672001-12-15 Akim Demaille <akim@epita.fr>
768
769 Make `make distcheck' work.
770
771 * lib/Makefile.am (INCLUDES): Add top_srcdir/intl, since hash uses
772 system.h which uses libgettext.h.
773
7742001-12-15 Akim Demaille <akim@epita.fr>
775
776 * src/nullable.c (set_nullable): Useless rules must be skipped,
777 otherwise, since we range over their symbols, we might look at a
778 nonterminal which no longer ``exists'', i.e., it is not counted in
779 `nvars', hence we overflow our arrays.
780
7812001-12-15 Akim Demaille <akim@epita.fr>
782
783 The header can also be produced directly, without any obstack!
784 Yahoo!
785
786 * src/files.c, src/files.h (defines_obstack): Remove.
787 (compute_header_macro): Global.
788 (defines_obstack_save): Remove.
789 * src/reader.c (parse_union_decl): No longer output to
790 defines_obstack: its content can be found in the `stype' muscle
791 anyway.
792 (output_token_translations): Merge into...
793 (symbols_output): this.
794 Rename as...
795 (symbols_save): this.
796 (reader): Adjust.
797 * src/output.c (header_output): New.
798 (output): Call it.
799
8002001-12-15 Akim Demaille <akim@epita.fr>
801
802 * src/reader.c (parse_union_decl): Instead of handling two obstack
803 simultaneously, use one to define the `stype' muscle, and use the
804 value of the latter to fill defines_obstack.
805 (copy_comment): Remove.
806 (copy_comment2): Work for a single obstack.
807 Rename as...
808 (copy_comment): this.
809
8102001-12-15 Akim Demaille <akim@epita.fr>
811
812 * src/lex.c, src/lex.h (xgetc): No longer static.
813 * src/reader.c (parse_union_decl): Revamp.
814
8152001-12-15 Akim Demaille <akim@epita.fr>
816
817 Still making progress in separating Bison into (i) input, (ii)
818 process, (iii) output: now we can directly output the parser file
819 without using table_obstack at all.
820
821 * src/files.c, src/files.h (table_obstack): Bye bye.
822 (parser_file_name): New.
823 * src/files.c (compute_output_file_names): Compute it.
824 * src/output.c (actions_output, output_parser)
825 (output_master_parser): To a file instead of an obstack.
826
8272001-12-15 Akim Demaille <akim@epita.fr>
828
829 Attach actions to rules, instead of pre-outputting them to
830 actions_obstack.
831
832 * src/gram.h (rule_t): action and action_line are new members.
833 * src/reader.c (symbol_list): Likewise.
834 (copy_action): Save the actions within the rule.
835 (packgram): Save them in rule_table.
836 * src/output.c (actions_output): New.
837 (output_parser): Use it on `%%actions'.
838 (output_rule_data): Don't free rule_table.
839 (output): Do it.
840 (prepare): Don't save the `action' muscle.
841 * src/bison.simple: s/%%action/%%actions/.
842
8432001-12-15 Akim Demaille <akim@epita.fr>
844
845 * src/reader.c (copy_action): When --yacc, don't append a `;'
846 to the user action: let it fail if lacking.
847 Suggested by Arnold Robbins and Tom Tromey.
848
8492001-12-14 Akim Demaille <akim@epita.fr>
850
851 * src/lex.c (literalchar): Simply return the char you decoded, non
852 longer mess around with obstacks and int pointers.
853 Adjust all callers.
854
8552001-12-14 Akim Demaille <akim@epita.fr>
856
857 * src/lex.c (literalchar): Don't escape the special characters,
858 just decode them, and keep them as char (before, eol was output as
859 the 2 char string `\n' etc.).
860 * src/output.c (output_rule_data): Use quotearg to output the
861 token strings.
862
8632001-12-13 Paul Eggert <eggert@twinsun.com>
864
865 * src/bison.simple (YYSIZE_T, YYSTACK_ALLOC, YYSTACK_FREE):
866 Do not infringe on the global user namespace when using C++.
867 (YYFPRINTF, YYSTDERR): New macros, needed for the above.
868 All uses of `fprintf' and `stderr' changed.
869
870 * doc/bison.texinfo: Document YYFPRINTF, YYSTDERR.
871
8722001-12-13 Akim Demaille <akim@epita.fr>
873
874 The computation of nullable is broken: it doesn't handle empty
875 RHS's properly.
876
877 * tests/torture.at (GNU AWK Grammar): New.
878 * tests/sets.at (Nullable): New.
879 * src/nullable.c (set_nullable): Instead of blindly looping over
880 `ritems', loop over the rules, and then over their rhs's.
881
882 Work around Autotest bugs.
883
884 * src/warshall.c (bitmatrix_print): Don't use `+--+' as table
885 frame, because Autotest understand lines starting with a `+' as
886 traces from the shell. Then, they are not processed properly.
887 Admittedly an Autotest bug, but we don't have time to wait for
888 Autotest to catch up.
889 * tests/regression.at (Broken Closure): Adjust to the new table
890 frames.
891 Move to...
892 * tests/sets.at: here.
893
8942001-12-13 Akim Demaille <akim@epita.fr>
895
896 * src/closure.c (closure): Use nrules instead of playing tricks
897 with BITS_PER_WORD.
898
8992001-12-13 Akim Demaille <akim@epita.fr>
900
901 * src/print.c (print_actions): Output the handling of `$' as the
902 traces do: shifting the token EOF. Before EOF was treated as a
903 nonterminal.
904 * tests/regression.at: Adjust some tests.
905 * src/print_graph.c (print_core): Complete the set of items via
906 closure. The next-to-final and final states are still unsatisfying,
907 but that's to be addressed elsewhere.
908 No longer output the rule numbers, but do output the state number.
909 A single loop for the shifts + gotos is enough, but picked a
910 distinct color for each.
911 (print_graph): Initialize and finalize closure.
912
9132001-12-13 Akim Demaille <akim@epita.fr>
914
915 * src/reader.c (readgram): Remove dead code, an strip useless
916 braces.
917 (get_type): Remove, unused.
918
9192001-12-12 Akim Demaille <akim@epita.fr>
920
921 * src/complain.h, src/complain.c: Remove error_one_per_line, rely
922 on that of lib/error.c.
923
9242001-12-12 Akim Demaille <akim@epita.fr>
925
926 Some hosts don't like `/' in includes.
927
928 * src/system.h: Include libgettext.h without qualifying the path.
929 * src/Makefile.am (INCLUDES): Add $(top_srcdir)/intl, remove
930 $(top_srcdir).
931
9322001-12-11 Marc Autret <autret_m@epita.fr>
933
934 * src/output.c (output_parser): Remove useless muscle.
935
9362001-12-11 Marc Autret <autret_m@epita.fr>
937
938 * src/bison.simple: Remove #line just before %%epilogue. It
939 is now handled in ...
940 * src/reader.c (read_additionnal_code): Add the output of a
941 #line for the epilogue.
942
9432001-12-10 Marc Autret <autret_m@epita.fr>
944
945 * src/reader.c (copy_definition): Re-use CPP-outed code which
946 replace precedent remove.
947 * src/bison.simple: Remove #line before %%prologue because
948 %%input-line is wrong at this time.
949
9502001-12-10 Marc Autret <autret_m@epita.fr>
951
952 * src/reader.c (symbols_output): Clean up.
953 * src/output.c (output_gram, output): Clean up.
954
9552001-12-10 Akim Demaille <akim@epita.fr>
956
957 * src/lalr.c (initialize_lookaheads): New. Extracted from...
958 * src/LR0.c (set_state_table): here.
959 * src/lalr.c (lalr): Call it.
960
9612001-12-10 Akim Demaille <akim@epita.fr>
962
963 * src/state.h (shifts): Remove the `number' member: shifts are
964 attached to state, hence no longer need to be labelled with a
965 state number.
966
9672001-12-10 Akim Demaille <akim@epita.fr>
968
969 Now that states have a complete set of members, the linked list of
970 shifts is useless: just fill directly the state's shifts member.
971
972 * src/state.h (shifts): Remove the `next' member.
973 * src/LR0.c (first_state, last_state): Remove.
974 Adjust the callers.
975 (augment_automaton): Don't look for the shifts that must be added
976 a shift on EOF: it is those of the state we looked for! But now,
977 since shifts are attached, it is no longer needed to looking
978 merely by its id: its number.
979
9802001-12-10 Akim Demaille <akim@epita.fr>
981
982 * src/LR0.c (augment_automaton): Better variable locality.
983 Remove an impossible branch: if there is a state corresponding to
984 the start symbol being shifted, then there is shift for the start
985 symbol from the initial state.
986
9872001-12-10 Akim Demaille <akim@epita.fr>
988
989 * src/LR0.c (augment_automaton): Call `insert_eof_shifting_state'
990 only when appropriate: when insert_start_shifting_state' is not
991 invoked.
992 * tests/regression.at (Rule Line Numbers): Adjust.
993
9942001-12-10 Akim Demaille <akim@epita.fr>
995
996 * src/LR0.c (augment_automaton): Now that all states have shifts,
997 merge the two cases addition shifts to the initial state.
998
9992001-12-10 Akim Demaille <akim@epita.fr>
1000
1001 * src/lalr.c (set_state_table): Move to...
1002 * src/LR0.c: here.
1003 * src/lalr.c (lalr): Don't call it...
1004 * src/LR0.c (generate_states): do it.
1005 * src/LR0.h (first_state): Remove, only the table is used.
1006
10072001-12-10 Akim Demaille <akim@epita.fr>
1008
1009 * src/LR0.h (first_shift, first_reduction): Remove.
1010 * src/lalr.c: Don't use first_shift: find shifts through the
1011 states.
1012
10132001-12-10 Akim Demaille <akim@epita.fr>
1014
1015 * src/LR0.c: Attach shifts to states as soon as they are
1016 computed.
1017 * src/lalr.c (set_state_table): Instead of assigning shifts to
1018 state, just assert that the mapping was properly done.
1019
10202001-12-10 Akim Demaille <akim@epita.fr>
1021
1022 * src/LR0.c (insert_start_shift): Rename as...
1023 (insert_start_shifting_state): this.
1024 (insert_eof_shifting_state, insert_accepting_state): New.
1025 (augment_automaton): Adjust.
1026 Better locality of the variables.
1027 When looking if the start_symbol is shifted from the initial
1028 state, using `while (... symbol != start_symbol ...)' sounds
1029 better than `while (... symbol < start_symbol ...)': If fail
1030 to see how the order between symbols could be relevant!
1031
10322001-12-10 Akim Demaille <akim@epita.fr>
1033
1034 * src/getargs.h: Don't declare `spec_name_prefix' and
1035 `spec_file_prefix', declared by src/files.h.
1036 * src/files.c, src/files.h: Default for spec_name_prefix is "yy".
1037 * src/muscle_tab.c (muscle_init): Default prefix to NULL.
1038 * src/output.c (prepare): Adjust.
1039 * src/reader.c (symbols_output): Likewise.
1040 * src/vmsgetargs.c: Vaguely adjust, but who cares?
1041
10422001-12-10 Akim Demaille <akim@epita.fr>
1043
1044 * src/muscle_tab.c (muscle_init): NULL is a better default than
1045 `"0"'.
1046
10472001-12-10 Akim Demaille <akim@epita.fr>
1048
1049 * src/reader.c (reader): Calling symbols_output once is enough.
1050
10512001-12-10 Akim Demaille <akim@epita.fr>
1052
1053 Now that states have a complete set of members, the linked list of
1054 reductions is useless: just fill directly the state's reductions
1055 member.
1056
1057 * src/state.h (struct reductions): Remove member `number' and
1058 `next'.
1059 * src/LR0.c (first_reduction, last_reduction): Remove.
1060 (save_reductions): Don't link the new reductions, store them in
1061 this_state.
1062 * src/lalr.c (set_state_table): No need to attach reductions to
1063 states, it's already done.
1064 * src/output.c (output_actions): No longer free the shifts, then
1065 the reductions, then the states: free all the states and their
1066 members.
1067
10682001-12-10 Akim Demaille <akim@epita.fr>
1069
1070 * src/options.c (OPTN, DRTV, BOTH): New.
1071 (option_table): Use them.
1072
1073 * src/muscle_tab.c: Don't include xalloc.h and string.h: that's
1074 the job of system.h.
1075 * src/options.c: Don't include stdio.h and xalloc.h for the same
1076 reasons.
1077
10782001-12-10 Akim Demaille <akim@epita.fr>
1079
1080 * src/output.c (output, prepare): Make sure the values of the
1081 muscles `action' and `prologue' are 0-terminated.
1082
10832001-12-10 Akim Demaille <akim@epita.fr>
1084
1085 Clean up GCC warnings.
1086
1087 * src/reader.c (copy_action): `buf' is not used.
1088 (parse_skel_decl): Be static.
1089 * src/muscle_tab.c (mhash1, mhash2, muscle_insert): Preserve `const'.
1090 * src/options.h (create_long_option_table): Have a real prototype.
1091 * lib/hash.c, lib/hash.h (hash_insert, hash_insert_at, hash_delete)
1092 (hash_delete_at): Return const void *.
1093 Adjust casts to preserve the const.
1094
10952001-12-10 Akim Demaille <akim@epita.fr>
1096
1097 * configure.in: Require 2.52g.
1098 M4 is not needed, but AUTOM4TE is.
1099 * m4/m4.m4: Remove.
1100 * tests/Makefile.am: Adjust.
1101
11022001-12-10 Akim Demaille <akim@epita.fr>
1103
1104 One structure for states is enough, even though theoretically
1105 there are LR(0) states and LALR(1) states.
1106
1107 * src/lalr.h (state_t): Remove.
1108 (state_table): Be state_t **, not state_t *.
1109 * src/state.h (core, CORE_ALLOC): Rename as...
1110 (state_t, STATE_ALLOC): this.
1111 Add the LALR(1) members: shifts, reductions, errs.
1112 * src/LR0.c (state_table): Rename as...
1113 (state_hash): this, to avoid name clashes with the global
1114 `state_table'.
1115 * src/print_graph.c, src/LR0.c, src/LR0.h, src/conflicts.c
1116 * src/lalr.c, src/lalr.h, src/output.c, src/print.c: Adjust.
1117
11182001-12-10 Akim Demaille <akim@epita.fr>
1119
1120 Bison dumps core on bash.y.
1121 Reported by Pascal Bart.
1122
1123 * src/warshall.c (bitmatrix_print): New.
1124 (TC): Use it.
1125 When performing a transitive closure R(i, j) && R(j, k) => R(i, k),
1126 j must be the outer loop.
1127 * tests/regression.at (Broken Closure): New.
1128
11292001-12-05 Akim Demaille <akim@epita.fr>
1130
1131 * tests/atlocal.in (CPPFLAGS): Do not leave a space between -I and
1132 its argument.
1133