X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/3a7456dd96820eea36e9f9656c7f5e29714f78d4..709ae8c6ee619a2bf89a26ddd7575bdeb5d1896f:/ChangeLog diff --git a/ChangeLog b/ChangeLog index 10cfebb7..30d62e86 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,20 +1,494 @@ +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 Aharon 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 + replace precedent remove. + * src/bison.simple: Remove #line before %%prologue because + %%input-line is wrong at this time. + +2001-12-10 Marc Autret + + * src/reader.c (symbols_output): Clean up. + * src/output.c (output_gram, output): Clean up. + +2001-12-10 Akim Demaille + + * src/lalr.c (initialize_lookaheads): New. Extracted from... + * src/LR0.c (set_state_table): here. + * src/lalr.c (lalr): Call it. + +2001-12-10 Akim Demaille + + * src/state.h (shifts): Remove the `number' member: shifts are + attached to state, hence no longer need to be labelled with a + state number. + +2001-12-10 Akim Demaille + + 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. + +2001-12-10 Akim Demaille + + * 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. + +2001-12-10 Akim Demaille + + * 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. + +2001-12-10 Akim Demaille + + * src/LR0.c (augment_automaton): Now that all states have shifts, + merge the two cases addition shifts to the initial state. + +2001-12-10 Akim Demaille + + * 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. + +2001-12-10 Akim Demaille + + * src/LR0.h (first_shift, first_reduction): Remove. + * src/lalr.c: Don't use first_shift: find shifts through the + states. + +2001-12-10 Akim Demaille + + * 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. + +2001-12-10 Akim Demaille + + * 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! + +2001-12-10 Akim Demaille + + * 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? + +2001-12-10 Akim Demaille + + * src/muscle_tab.c (muscle_init): NULL is a better default than + `"0"'. + +2001-12-10 Akim Demaille + + * src/reader.c (reader): Calling symbols_output once is enough. + +2001-12-10 Akim Demaille + + 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. + +2001-12-10 Akim Demaille + + * 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. + +2001-12-10 Akim Demaille + + * src/output.c (output, prepare): Make sure the values of the + muscles `action' and `prologue' are 0-terminated. + +2001-12-10 Akim Demaille + + 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. + +2001-12-10 Akim Demaille + + * configure.in: Require 2.52g. + M4 is not needed, but AUTOM4TE is. + * m4/m4.m4: Remove. + * tests/Makefile.am: Adjust. + +2001-12-10 Akim Demaille + + 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. + +2001-12-10 Akim Demaille + + 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. + +2001-12-05 Akim Demaille + + * tests/atlocal.in (CPPFLAGS): Do not leave a space between -I and + its argument. + Reported by Peter Hámorský. + +2001-12-05 Akim Demaille + + * 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. + +2001-12-05 Akim Demaille + + * 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. + +2001-12-05 Akim Demaille + + * src/output.c (pack_vector): Use assert, not berror. + * src/main.c (berror): Remove, unused. + +2001-12-05 Akim Demaille + + 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. + +2001-12-05 Akim Demaille + + * 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. + +2001-12-05 Akim Demaille + + * src/closure.c (print_closure): Improve. + (closure): Use it for printing input and output. + +2001-12-05 Akim Demaille + + * src/closure.c (FIRSTS, FDERIVES): Adjust to reality: they are + indexed by nonterminals. + 2001-12-05 Akim Demaille * src/warshall.c (TC, RTC): De-obsfucate (source reduced to 22% of what it was!). * src/warshall.h: Remove accidental duplication of the content. - 2001-12-05 Akim Demaille * src/closure.c (set_fderives): De-obfuscate. - 2001-12-05 Akim Demaille * src/closure.c (print_firsts, print_fderives): De-obfuscate. - 2001-12-05 Akim Demaille * src/closure.c (set_firsts): De-obfuscate. @@ -25,7 +499,6 @@ using the good o' techniques: arrays not pointers, variable locality, BITISSET, RESETBIT etc. - 2001-12-05 Akim Demaille Pessimize the code to simplify it: from now on, all the states @@ -1953,7 +2426,7 @@ * 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.