X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/e83d80b8ed8587fd05437d33f2011403f55f1f9d..75142d452b7f6bc3b6be3d8a08c0f602fd157ec5:/ChangeLog diff --git a/ChangeLog b/ChangeLog index 2e2cbb0d..5c2bd8f4 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,6 +1,517 @@ +2001-12-27 Akim Demaille + + 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 + + * 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 + + * 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 + + * 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 + + * 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 + + * 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 + + * src/lalr.c (set_goto_map, initialize_F): Use SHIFT_SYMBOL. + +2001-12-27 Akim Demaille + + * 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 + + * src/reader.c (copy_dollar, copy_at): Better checking of `n' in + `$n' and `@n'. + + +2001-12-27 Akim Demaille + + * src/lalr.c (add_lookback_edge): Use state_t instead of ints. + (build_relations): Adjust. + + +2001-12-27 Akim Demaille + + * src/lalr.c (set_goto_map): Remove a wrong but benign loop + duplication. + + +2001-12-27 Akim Demaille + + * src/reader.c (packgram): Catch nitems overflows. + + +2001-12-27 Akim Demaille + + * 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 + + * 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 + + * src/reader.c (symbol_list_new): Be sure to initialize all the + fields. + +2001-12-27 Akim Demaille + + 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 + + * 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 + + * 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 + + * src/bison.hairy: Formatting/comment changes. + ANSIfy. + Remove `register' indications. + Add plenty of `static'. + +2001-12-27 Akim Demaille + + * src/output.c (prepare): Drop the muscle `ntbase' which + duplicates ntokens. + * src/bison.simple: Formatting/comment changes. + Use YYNTOKENS only, which is documented, but not YYNTBASE, which + is an undocumented synonym. + + +2001-12-22 Akim Demaille + + * src/output.c (output_table_data): Change the prototype to use + `int' for array ranges: some invocations do pass an int, not a + short. + Reported by Wayne Green. + +2001-12-22 Akim Demaille + + Some actions of web2c.y are improperly triggered. + Reported by Mike Castle. + + * src/lalr.c (traverse): s/F (i)[k] = F (j)[k]/F (j)[k] = F (i)[k]/. + * tests/regression.at (Web2c): Rename as... + (Web2c Report): this. + (Web2c Actions): New. + +2001-12-22 Akim Demaille + + Reductions in web2c.y are improperly reported. + Reported by Mike Castle. + + * src/conflicts.c (print_reductions): Fix. + * tests/regression.at (Web2c): New. + +2001-12-18 Akim Demaille + + Some host fail on `assert (!"foo")', which expands to + ((!"foo") ? (void)0 : __assert("!"foo."", __FILE__, __LINE__)) + Reported by Nelson Beebee. + + * src/output.c, src/vcg.c: Replace `assert (!"it succeeded")' with + `#define it_succeeded 0' and `assert (it_succeeded)'. + +2001-12-17 Marc Autret + + * src/bison.simple: Don't hard code the skeleton line and filename. + * src/output.c (output_parser): Rename 'line' as 'output_line'. + New line counter 'skeleton_line' (skeleton-line muscle). + +2001-12-17 Paul Eggert + + * NEWS, doc/bison.texinfo, doc/bison.1, doc/bison.rnh: Document that + YYDEBUG must be defined to a nonzero value. + + * src/bison.simple (yytname): Do not assume that the user defines + YYDEBUG to a properly parenthesized expression. + +2001-12-17 Akim Demaille + + * src/state.h (state_t): Rename lookaheads as lookaheadsp. + nlookaheads is a new member. + Adjust all users. + * src/lalr.h (nlookaheads): Remove this orphan declaration. + * src/lalr.c (initialize_lookaheads): Set nlookaheads for each + state. + +2001-12-17 Akim Demaille + + * src/files.h, src/files.c (open_files, close_files): Remove. + * src/main.c (main): Don't open/close files, nor invoke lex_free, + let... + * src/reader.c (reader): Do it. + +2001-12-17 Akim Demaille + + * src/conflicts.c (print_reductions): Formatting changes. + +2001-12-17 Akim Demaille + + * src/conflicts.c (flush_shift): Also adjust lookaheadset. + (flush_reduce): New. + (resolve_sr_conflict): Adjust. + +2001-12-17 Akim Demaille + + * src/output.c (output_obstack): Be static and rename as... + (format_obstack): this, to avoid any confusion with files.c's + output_obstack. + * src/reader.h (muscle_obstack): Move to... + * src/output.h: here, since it's defined in output.c. + +2001-12-17 Akim Demaille + + * src/output.c (action_row, save_column, default_goto) + (sort_actions, matching_state, pack_vector): Better variable + locality. + +2001-12-17 Akim Demaille + + * src/output.c: Various formatting changes. + +2001-12-17 Akim Demaille + + * src/files.c (output_files): Free the output_obstack. + * src/main.c (main): Call print and print_graph conditionally. + * src/print.c (print): Work unconditionally. + * src/print_graph.c (print_graph): Work unconditionally. + * src/conflicts.c (log_resolution): Output only if verbose_flag. + +2001-12-16 Marc Autret + + * src/output.c (actions_output): Fix. When we use %no-lines, + there is one less line per action. + +2001-12-16 Marc Autret + + * src/bison.simple: Remove a useless #line directive. + s/#line %%line %%skeleton/#line %%line "%%parser-file-name"/'. + * src/output.c (get_lines_number): New. + (output_parser): Adjust, now takes care about the lines of a + output muscles. + Fix line numbering. + (actions_output): Computes the number of lines taken by actions. + (output_master_parser): Insert new skeleton which is the name of + the output parser file name. + +2001-12-15 Marc Autret + + * src/bison.simple [YYERROR_VERBOSE]: Restore backward compatibility. + +2001-12-15 Marc Autret + + * src/output.c (output_gram): Keep track of the hairy one. + +2001-12-15 Akim Demaille + + Make `make distcheck' work. + + * lib/Makefile.am (INCLUDES): Add top_srcdir/intl, since hash uses + system.h which uses libgettext.h. + +2001-12-15 Akim Demaille + + * src/nullable.c (set_nullable): Useless rules must be skipped, + otherwise, since we range over their symbols, we might look at a + nonterminal which no longer ``exists'', i.e., it is not counted in + `nvars', hence we overflow our arrays. + +2001-12-15 Akim Demaille + + The header can also be produced directly, without any obstack! + Yahoo! + + * src/files.c, src/files.h (defines_obstack): Remove. + (compute_header_macro): Global. + (defines_obstack_save): Remove. + * src/reader.c (parse_union_decl): No longer output to + defines_obstack: its content can be found in the `stype' muscle + anyway. + (output_token_translations): Merge into... + (symbols_output): this. + Rename as... + (symbols_save): this. + (reader): Adjust. + * src/output.c (header_output): New. + (output): Call it. + +2001-12-15 Akim Demaille + + * src/reader.c (parse_union_decl): Instead of handling two obstack + simultaneously, use one to define the `stype' muscle, and use the + value of the latter to fill defines_obstack. + (copy_comment): Remove. + (copy_comment2): Work for a single obstack. + Rename as... + (copy_comment): this. + +2001-12-15 Akim Demaille + + * src/lex.c, src/lex.h (xgetc): No longer static. + * src/reader.c (parse_union_decl): Revamp. + +2001-12-15 Akim Demaille + + 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. + +2001-12-15 Akim Demaille + + 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/. + +2001-12-15 Akim Demaille + + * src/reader.c (copy_action): When --yacc, don't append a `;' + to the user action: let it fail if lacking. + Suggested by Arnold Robbins and Tom Tromey. + +2001-12-14 Akim Demaille + + * src/lex.c (literalchar): Simply return the char you decoded, non + longer mess around with obstacks and int pointers. + Adjust all callers. + +2001-12-14 Akim Demaille + + * 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. + +2001-12-13 Paul Eggert + + * 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. + +2001-12-13 Akim Demaille + + 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. + +2001-12-13 Akim Demaille + + * src/closure.c (closure): Use nrules instead of playing tricks + with BITS_PER_WORD. + +2001-12-13 Akim Demaille + + * 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. + +2001-12-13 Akim Demaille + + * src/reader.c (readgram): Remove dead code, an strip useless + braces. + (get_type): Remove, unused. + +2001-12-12 Akim Demaille + + * src/complain.h, src/complain.c: Remove error_one_per_line, rely + on that of lib/error.c. + +2001-12-12 Akim Demaille + + 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). + +2001-12-11 Marc Autret + + * src/output.c (output_parser): Remove useless muscle. + +2001-12-11 Marc Autret + + * 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. + 2001-12-10 Marc Autret - * src/reader.c (copy_definition): Re-use CPP-outed code which + * 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. @@ -8,7 +519,7 @@ 2001-12-10 Marc Autret * src/reader.c (symbols_output): Clean up. - * src/output.c (output_gram, output): Clean up. + * src/output.c (output_gram, output): Clean up. 2001-12-10 Akim Demaille @@ -2189,7 +2700,7 @@ * src/files.h (graph_obstack): New extern declaration. * src/Makefile.am: Add new source files. -2001-08-06 Marc Autret +2001-08-06 Marc Autret * src/print_graph.c, src/print_graph.h (graph): New. * src/vcg.h: New file.