+2001-12-29 Akim Demaille <akim@epita.fr>
+
+ * src/reader.c (readgram): Bind the initial rule's lineno to that
+ of the first rule.
+ * tests/regression.at (Rule Line Numbers, Unresolved SR Conflicts):
+ (Solved SR Conflicts): Adjust rule 0's line number.
+
+
+2001-12-29 Akim Demaille <akim@epita.fr>
+
+ Fix the `GAWK Grammar' failure.
+
+ * src/LR0.c (final_state): Initialize to -1 so that we do compute
+ the reductions of the first state which was mistakenly confused
+ with the final state because precisely final_state was initialized
+ to 0.
+ * tests/sets.at (Nullable): Adjust: state 0 does have lookaheads,
+ now noticed by Bison.
+ * tests/regression.at (Rule Line Numbers): Adjust: state 0 does
+ have a reduction on $default.
+
+
+2001-12-29 Akim Demaille <akim@epita.fr>
+
+ * src/gram.c (ritem_print): Be sure to subtract 1 when displaying
+ rule line numbers.
+ * src/closure.c (print_closure): Likewise.
+ * src/derives.c (print_derives): Likewise.
+ * tests/sets.at (Nullable): Adjust: the rule numbers are correct
+ now.
+
+2001-12-29 Akim Demaille <akim@epita.fr>
+
+ * src/lalr.c (lookaheads_print): New.
+ (lalr): Call it when --trace-flag.
+ * tests/sets.at (Nullable): Adjust: when tracing, the lookaheads
+ are dumped.
+
+
+2001-12-29 Akim Demaille <akim@epita.fr>
+
+ * src/derives.c (print_derives): Be sure to use `>= 0', not `> 0',
+ when walking through ritem, even via rule->rhs.
+ * src/reduce.c (dump_grammar, useful_production, reduce_output)
+ (useful_production, useless_nonterminals): Likewise.
+ (reduce_grammar_tables): Likewise, plus update nritems.
+ * src/nullable.c (set_nullable): Likewise.
+ * src/lalr.c (build_relations): Likewise.
+ * tests/sets.at (Nullable): Adjust.
+ Fortunately, now, the $axiom is no longer nullable.
+
+
+2001-12-29 Akim Demaille <akim@epita.fr>
+
+ * src/LR0.c (generate_states): Use nritems, not nitems, nor using
+ the 0-sentinel.
+ * src/gram.c (ritem_longest_rhs): Likewise.
+ * src/reduce.c (nonterminals_reduce): Likewise.
+ * src/print_graph.c (print_graph): Likewise.
+ * src/output.c (output_rule_data): Likewise.
+ * src/nullable.c (set_nullable): Likewise.
+
+2001-12-29 Akim Demaille <akim@epita.fr>
+
+ * src/output.c: Comment changes.
+
+2001-12-27 Paul Eggert <eggert@twinsun.com>
+
+ * src/bison.simple (YYSTACK_ALLOC, YYSIZE_T): Remove special
+ cases for non-GNU systems like AIX, HP-UX, SGI, Sun, and
+ Sparc, as they were causing more porting problems than the
+ (minor) performance improvement was worth.
+
+ Also, catch up with 1.31's YYSTD.
+
+2001-12-27 Akim Demaille <akim@epita.fr>
+
+ * src/output.c (output_gram): Rely on nritems, not the
+ 0-sentinel. See below.
+ Use -1 as separator, not 0.
+ * src/bison.simple (yyparse): Subtract 1 to the rule numbers.
+ Rely on -1 as separator in yyrhs, instead of 0.
+ * tests/calc.at (AT_CHECK_CALC): Now, the parsers no longer issue
+ twice `Now at end of input', therefore there are two lines less to
+ expect.
+
+2001-12-27 Akim Demaille <akim@epita.fr>
+
+ * tests/regression.at (Unresolved SR Conflicts):
+ (Solved SR Conflicts, Rule Line Numbers): Adjust to the changes
+ below.
+
+2001-12-27 Akim Demaille <akim@epita.fr>
+
+ * src/LR0.c (new_state): Recognize the final state by the fact it
+ is reached by eoftoken.
+ (insert_start_shifting_state, insert_eof_shifting_state)
+ (insert_accepting_state, augment_automaton): Remove, since now
+ these states are automatically computed from the initial state.
+ (generate_states): Adjust.
+ * src/print.c: When reporting a rule number to the user, substract
+ 1, so that the axiom rule is rule 0, and the first user rule is 1.
+ * src/reduce.c: Likewise.
+ * src/print_graph.c (print_core): For the time being, just as for
+ the report, depend upon --trace-flags to dump the full set of
+ items.
+ * src/reader.c (readgram): Once the grammar read, insert the rule
+ 0: `$axiom: START-SYMBOL $'.
+ * tests/set.at: Adjust: rule 0 is now displayed, and since the
+ number of the states has changed (the final state is no longer
+ necessarily the last), catch up.
+
+2001-12-27 Akim Demaille <akim@epita.fr>
+
+ Try to make the use of the eoftoken valid. Given that its value
+ is 0 which was also used as a sentinel in ritem, (i) make sure >= 0
+ is used instead of > 0 where appropriate, (ii), depend upon nritems
+ instead of the 0-sentinel.
+
+ * src/gram.h, src/gram.c (nritems): New.
+ Expected to be duplication of nitems, but for the time being...
+ * src/reader.c (packgram): Assert nritems and nitems are equal.
+ * src/LR0.c (allocate_itemsets, new_itemsets): Adjust.
+ * src/closure.c (print_closure, print_fderives): Likewise.
+ * src/gram.c (ritem_print): Likewise.
+ * src/print.c (print_core, print_grammar): Likewise.
+ * src/print_graph.c: Likewise.
+
+2001-12-27 Akim Demaille <akim@epita.fr>
+
+ * src/main.c (main): If there are complains after grammar
+ reductions, then output the report anyway if requested, then die.
+ * src/symtab.c (bucket_new): Initialize `value' to -1, not 0.
+ * src/reader.c (eoftoken): New.
+ (parse_token_decl): If the token being defined has value `0', it
+ is the eoftoken.
+ (packsymbols): No longer hack `tags' to insert `$' by hand.
+ Be sure to preserve the value of the eoftoken.
+ (reader): Make sure eoftoken is defined.
+ Initialize nsyms to 0: now eoftoken is created just like the others.
+ * src/print.c (print_grammar): Don't special case the eof token.
+ * src/regression.at: Adjust: `$' has value 0, not -1, which was a
+ lie anyway, albeit pleasant.
+ * tests/calc.at: Exercise error messages with eoftoken.
+ Change the grammar so that empty input is invalid.
+ Adjust expectations.
+ When yyungeting, be sure to use a valid yylloc: use last_yylloc.
+
+2001-12-27 Akim Demaille <akim@epita.fr>
+
+ * configure.in: Check the protos of strchr ans strspn.
+ Replace strchr if needed.
+ * src/system.h: Provide the protos of strchr, strspn and memchr if
+ missing.
+ * lib/strchr.c: New.
+ * src/reader.c (symbols_save): Use strchr.
+
+2001-12-27 Akim Demaille <akim@epita.fr>
+
+ * src/print.c, src/print_graph.c (escape): New.
+ Use it to quote the TAGS outputs.
+ * src/print_graph.c (print_state): Now errors are in red, and
+ reductions in green.
+ Prefer high to wide: output the state number on a line of its own.
+
+2001-12-27 Akim Demaille <akim@epita.fr>
+
+ * src/state.h, src/state.c (reductions_new): New.
+ * src/LR0.c (set_state_table): Let all the states have a
+ `reductions', even if reduced to 0.
+ (save_reductions): Adjust.
+ * src/lalr.c (initialize_LA, initialize_lookaheads): Adjust.
+ * src/print.c (print_reductions, print_actions): Adjust.
+ * src/output.c (action_row): Adjust.
+
+2001-12-27 Akim Demaille <akim@epita.fr>
+
+ * src/state.h, src/state.c (errs_new, errs_dup): New.
+ * src/LR0.c (set_state_table): Let all the states have an errs,
+ even if reduced to 0.
+ * src/print.c (print_errs, print_reductions): Adjust.
+ * src/output.c (output_actions, action_row): Adjust.
+ * src/conflicts.c (resolve_sr_conflict): Adjust.
+
+2001-12-27 Akim Demaille <akim@epita.fr>
+
+ * src/lalr.c (set_goto_map, initialize_F): Use SHIFT_SYMBOL.
+
+2001-12-27 Akim Demaille <akim@epita.fr>
+
+ * src/conflicts.c, src/conflicts.h (print_reductions): Move to...
+ * src/print.c: here.
+ (lookaheadset, shiftset): New, used as additional storage by
+ print_reductions.
+ (print_results): Adjust.
+ (print_shifts, print_gotos, print_errs): New, extracted from...
+ (print_actions): here.
+ * src/print_graph.c (print_actions): Remove dead code.
+
+2001-12-27 Akim Demaille <akim@epita.fr>
+
+ * src/reader.c (copy_dollar, copy_at): Better checking of `n' in
+ `$n' and `@n'.
+
+2001-12-27 Akim Demaille <akim@epita.fr>
+
+ * src/lalr.c (add_lookback_edge): Use state_t instead of ints.
+ (build_relations): Adjust.
+
+2001-12-27 Akim Demaille <akim@epita.fr>
+
+ * src/lalr.c (set_goto_map): Remove a wrong but benign loop
+ duplication.
+
+2001-12-27 Akim Demaille <akim@epita.fr>
+
+ * src/reader.c (packgram): Catch nitems overflows.
+
+2001-12-27 Akim Demaille <akim@epita.fr>
+
+ * src/files.c, src/files.h (guard_obstack): Remove.
+ * src/output.c (output): Adjust.
+ * src/reader.c (parse_braces): New, factoring...
+ (copy_action, copy_guard): these two which are renamed as...
+ (parse_action, parse_guard): these.
+ As a voluntary consequence, using braces around guards is now
+ mandatory.
+
+2001-12-27 Akim Demaille <akim@epita.fr>
+
+ * src/gram.h (rule_t): `guard' and `guard_line' are new members.
+ * src/reader.c (symbol_list): `guard' and `guard_line' are new
+ members.
+ (symbol_list_new): Adjust.
+ (copy_action): action_line is the first line, not the last.
+ (copy_guard): Just as for actions, store the `action' only, not
+ the switch/case/break flesh.
+ Don't parse the user action that might follow the guard, let...
+ (readgram): do it, i.e., now, there can be an action after a
+ guard.
+ In other words the guard is just explicitly optional.
+ (packgram): Adjust.
+ * src/output.c (guards_output): New.
+ (output_parser): Call it when needed.
+ (output): Also free the guard and attrs obstacks.
+ * src/files.c, src/files.h (obstack_save): Remove.
+ (output_files): Remove.
+ As a result, if one needs the former `.act' file, using an
+ appropriate skeleton which requires actions and guards is now
+ required.
+ * src/main.c (main): Adjust.
+ * tests/semantic.at: New.
+ * tests/regression.at: Use `input.y' as input file name.
+ Avoid 8+3 problems by requiring input.c when the test needs the
+ parser.
+
+2001-12-27 Akim Demaille <akim@epita.fr>
+
+ * src/reader.c (symbol_list_new): Be sure to initialize all the
+ fields.
+
+2001-12-27 Akim Demaille <akim@epita.fr>
+
+ All the hacks using a final pseudo state are now useless.
+
+ * src/LR0.c (set_state_table): state_table holds exactly nstates.
+ * src/lalr.c (nLA): New.
+ (initialize_LA, compute_lookaheads, initialize_lookaheads): Use it
+ instead of lookaheadsp from the pseudo state (nstate + 1).
+
+2001-12-27 Akim Demaille <akim@epita.fr>
+
+ * src/output.c (action_row, token_actions): Use a state_t instead
+ of a integer, and nlookaheads instead of the following state's
+ lookaheadsp.
+
+2001-12-27 Akim Demaille <akim@epita.fr>
+
+ * src/conflicts.c (log_resolution, flush_shift)
+ (resolve_sr_conflict, set_conflicts, solve_conflicts)
+ (count_sr_conflicts, count_rr_conflicts, conflicts_output)
+ (conflicts_print, print_reductions): Use a state_t instead of an
+ integer when referring to a state.
+ As much as possible, depend upon nlookaheads, instead of the
+ `lookaheadsp' member of the following state (since lookaheads of
+ successive states are successive, the difference between state n + 1
+ and n served as the number of lookaheads for state n).
+ * src/lalr.c (add_lookback_edge): Likewise.
+ * src/print.c (print_core, print_actions, print_state)
+ (print_results): Likewise.
+ * src/print_graph.c (print_core, print_actions, print_state)
+ (print_graph): Likewise.
+ * src/conflicts.h: Adjust.
+
2001-12-27 Akim Demaille <akim@epita.fr>
* src/bison.hairy: Formatting/comment changes.
Use YYNTOKENS only, which is documented, but not YYNTBASE, which
is an undocumented synonym.
-
2001-12-22 Akim Demaille <akim@epita.fr>
* src/output.c (output_table_data): Change the prototype to use
projects / bison.git / blobdiff