X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/88bce5a2ef15e5b508749e75ddad709aca85b019..db2cc12fd07acb54b19cf6475f6d330a8b904e0a:/ChangeLog diff --git a/ChangeLog b/ChangeLog index 95a4a2e3..d9e3482a 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,195 @@ +2002-08-02 Akim Demaille + + * src/conflicts.c (conflicts_output): Don't output rules never + reduced here, since anyway that computation doesn't work. + * src/gram.h, src/gram.h (rule_filter_t, rule_useful_p) + (rule_useless_p, rule_never_reduced_p): New. + (grammar_rules_partial_print): Use a filter instead of a range. + Display the title only if needed. + (grammar_rules_print): Adjust. + (grammar_rules_never_reduced_report): New. + * src/tables.c (action_row): Move the computation of rules never + reduced to... + (token_actions): here. + * src/main.c (main): Make the parser before making the report, so + that rules never reduced are computed. + Call grammar_rules_never_reduced_report. + * src/print.c (print_results): Report rules never reduced. + * tests/conflicts.at, tests/reduce.at: Adjust. + +2002-08-01 Akim Demaille + + Instead of attaching lookaheads and duplicating the rules being + reduced by a state, attach the lookaheads to the reductions. + + * src/state.h (state_t): Remove the `lookaheads', + `lookaheads_rule' member. + (reductions_t): Add a `lookaheads' member. + Use a regular array for the `rules'. + * src/state.c (reductions_new): Initialize the lookaheads member + to 0. + (state_rule_lookaheads_print): Adjust. + * src/state.h, src/state.c (state_reductions_find): New. + * src/conflicts.c (resolve_sr_conflict, set_conflicts) + (count_rr_conflicts): Adjust. + * src/lalr.c (LArule): Remove. + (add_lookback_edge): Adjust. + (state_lookaheads_count): New. + (states_lookaheads_initialize): Merge into... + (initialize_LA): this. + (lalr_free): Adjust. + * src/main.c (main): Don't free nullable and derives too early: it + is used by --verbose. + * src/print.c, src/print_graph.c, src/tables.c: Adjust. + +2002-08-01 Akim Demaille + + * src/derives.h, src/derives.c (derives): A `rule_t***' instead of + `rule_number_t**'. + (set_derives, free_derives): Rename as... + (derives_compute, derives_free): this. + Adjust all dependencies. + * src/nullable.c (set_nullable, free_nullable): Rename as... + (nullable_compute, nullable_free): these. + (rule_list_t): Store rule_t *, not rule_number_t. + * src/state.c (state_rule_lookaheads_print): Directly compare rule + pointers, instead of their numbers. + * src/main.c (main): Call nullable_free, and derives_free earlier, + as they were lo longer used. + +2002-08-01 Akim Demaille + + * lib/timevar.c (get_time): Include children time. + * src/lalr.h (LA, LArule): Don't export them: used with the + state_t. + * src/lalr.c (LA, LArule): Static. + * src/lalr.h, src/lalr.c (lalr_free): New. + * src/main.c (main): Call it. + * src/tables.c (pack_vector): Check whether loc is >= to the + table_size, not >. + (pack_tables): Don't free froms, tos, conflict_tos, and pos... + (tables_generate): do it, since that's also it which allocates + them. + Don't free LA and LArule, main does. + +2002-07-31 Akim Demaille + + Separate parser tables computation and output. + + * src/output.c (nvectors, base_t, base, base_ninf, conflict_table) + (conflict_list, conflict_list_cnt, table, check, table_ninf) + (yydefgoto, yydefact, high): Move to... + * src/tables.h, src/tables.c: here. + * src/output.c (vector_number_t, VECTOR_NUMBER_MAX) + (VECTOR_NUMBER_MIN, state_number_to_vector_number) + (symbol_number_to_vector_number, nvectors, BASE_MAX, BASE_MIN) + (froms, tos, conflict_tos, tally, width, action_t, ACTION_MAX) + (ACTION_MIN, actrow, order, nentries, pos, conflrow) + (conflict_list_free, table_size, lowzero, table_grow, conflict_row) + (action_row, save_row, token_actions, save_column, default_goto) + (goto_actions, sort_actions, matching_state, pack_vector) + (table_ninf_remap, pack_table, prepare_actions): Move to... + * src/tables.c: here. + * src/tables.h, src/tables.c(tables_generate, tables_free): New. + * src/output.c (token_actions, output_base, output_conflicts) + (output_check): Merge into... + (prepare_actions): this. + (actions_output): Rename as... + (user_actions_output): this. + * src/main.c (main): Call tables_generate and tables_free. + +2002-07-31 Akim Demaille + + Steal GCC's --time-report support. + + * lib/timevar.c, lib/timevar.h, lib/timevar.def: New, + stolen/adjusted from GCC. + * m4/stage.m4: Remove time related checks. + * m4/timevar.m4: New. + * configure.in: Adjust. + * src/system.h: Adjust to using timevar.h. + * src/getargs.h, src/getargs.c: Support trace_time for + --trace=time. + * src/main.c (stage): Remove. + (main): Replace `stage' invocations with timevar calls. + * src/output.c: Insert pertinent timevar calls. + +2002-07-31 Akim Demaille + + Let --trace have arguments. + + * src/getargs.h (enum trace_e): New. + * src/getargs.c (trace_args, trace_types, trace_argmatch): New. + (long_options, short_options): --trace/-T takes an optional + argument. + Change all the uses of trace_flag to reflect the new flags. + * tests/sets.at (Firsts, Nullable, Broken Closure): Use --trace=sets. + + Strengthen `stage' portability. + + * m4/stage.m4 (BISON_PREREQ_STAGE): New. + * configure.in: Use it. + Don't check for malloc.h and sys/times.h. + * src/system.h: Include them when appropriate. + * src/main.c (stage): Compile only when mallinfo, struct mallinfo, + times and struct tms are available. + +2002-07-30 Akim Demaille + + In verbose parse error message, don't report `error' as an + expected token. + * tests/actions.at (Printers and Destructors): Adjust. + * tests/calc.at (Calculator $1): Adjust. + * data/yacc.c, data/glr.c, data/lalr1.c: When making the verbose + error message, do not report the parser accepts the error token in + that state. + +2002-07-30 Akim Demaille + + Normalize conflict related messages. + + * src/complain.h, src/complain.c (warn, complain): New. + * src/conflicts.c (conflicts_print): Use them. + (conflict_report_yacc): New, extracted from... + (conflicts_print): here. + * tests/conflicts.at, tests/existing.at: Adjust. + +2002-07-30 Akim Demaille + + Report rules which are never reduced by the parser: those hidden + by conflicts. + + * src/LR0.c (save_reductions): Don't make the final state too + different: save its reduction (accept) instead of having a state + without any action (no shift or goto, no reduce). + Note: the final state is now a ``regular'' state, i.e., the + parsers now contain `reduce 0' as default reduction. + Nevertheless, since they decide to `accept' when yystate = + final_state, they still will not reduce rule 0. + * src/print.c (print_actions, print_reduction): Adjust. + * src/output.c (action_row): Track reduced rules. + (token_actions): Report rules never reduced. + * tests/conflicts.at, tests/regression.at: Adjust. + +2002-07-30 Akim Demaille + + `stage' was accidently included in a previous patch. + Initiate its autoconfiscation. + + * configure.in: Look for malloc.h and sys/times.h. + * src/main.c (stage): Adjust. + Report only when trace_flag. + +2002-07-29 Akim Demaille + + * src/state.h, src/state.c (transitions_t): Holds state_t*'s, not + state_number_t. + (errs_t): symbol_t*, not symbol_number_t. + (reductions_t): rule_t*, not rule_number_t. + (FOR_EACH_SHIFT): New. + * src/LR0.c, src/conflicts.c, src/lalr.c, src/output.c + * src/print.c, src/print_graph.c: Adjust. + 2002-07-29 Akim Demaille Use $accept and $end, as BYacc and BTYacc do, instead of $axiom and $.