X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/5181e40827fde79c50777b1e307704208f59e72a..8a731ca8296e54a6fb31eb42cead791baf6810e7:/ChangeLog?ds=inline diff --git a/ChangeLog b/ChangeLog index 2953cb37..65776e55 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,1069 @@ +2002-06-30 Akim Demaille + + * src/LR0.c (save_reductions): Remove, replaced by... + * src/state.h, src/state.c (state_reductions_set): New. + (reductions, errs): Rename as... + (reductions_t, errs_t): these. + Adjust all dependencies. + + +2002-06-30 Akim Demaille + + * src/LR0.c (state_list_t, state_list_append): New. + (first_state, last_state): Now symbol_list_t. + (this_state): Remove. + (new_itemsets, append_states, save_reductions): Take a state_t as + argument. + (set_states, generate_states): Adjust. + (save_shifts): Remove, replaced by... + * src/state.h, src/state.c (state_shifts_set): New. + (shifts): Rename as... + (shifts_t): this. + Adjust all dependencies. + * src/state.h (state_t): Remove the `next' member. + + +2002-06-30 Akim Demaille + + * src/vcg.c (quote): Use slot 2, since we often pass symbol tag + escaped in slot 0. + + +2002-06-30 Akim Demaille + + Use hash.h for the state hash table. + + * src/LR0.c (STATE_HASH_SIZE, state_hash): Remove. + (allocate_storage): Use state_hash_new. + (free_storage): Use state_hash_free. + (new_state, get_state): Adjust. + * src/lalr.h, src/lalr.c (states): Move to... + * src/states.h (state_t): Remove the `link' member, no longer + used. + * src/states.h, src/states.c: here. + (state_hash_new, state_hash_free, state_hash_lookup) + (state_hash_insert, states_free): New. + * src/states.c (state_table, state_compare, state_hash): New. + * src/output.c (output_actions): Do not free states now, since we + still need to know the final_state number in `prepare', called + afterwards. Do it... + * src/main.c (main): here: call states_free after `output'. + + +2002-06-30 Akim Demaille + + Use hash.h for the state hash table. + + * src/LR0.c (STATE_HASH_SIZE, state_hash): Remove. + (allocate_storage): Use state_hash_new. + (free_storage): Use state_hash_free. + (new_state, get_state): Adjust. + * src/lalr.h, src/lalr.c (states): Move to... + * src/states.h (state_t): Remove the `link' member, no longer + used. + * src/states.h, src/states.c: here. + (state_hash_new, state_hash_free, state_hash_lookup) + (state_hash_insert, states_free): New. + * src/states.c (state_table, state_compare, state_hash): New. + * src/output.c (output_actions): Do not free states now, since we + still need to know the final_state number in `prepare', called + afterwards. Do it... + * src/main.c (main): here: call states_free after `output'. + + +2002-06-30 Akim Demaille + + * src/state.h, src/state.c (state_new): New, extracted from... + * src/LR0.c (new_state): here. + * src/state.h (STATE_ALLOC): Move to... + * src/state.c: here. + * src/LR0.h, src/LR0.c (nstates, final_state): Move to... + * src/state.h, src/state.c: here. + + +2002-06-30 Akim Demaille + + * src/reader.c (gensym): Rename as... + * src/symtab.h, src/symtab.c (dummy_symbol_get): this. + (getsym): Rename as... + (symbol_get): this. + + +2002-06-30 Akim Demaille + + * src/state.h (state_number_t, STATE_NUMBER_MAX): New. + * src/LR0.c, src/LR0.h, src/conflicts.c, src/lalr.c, src/lalr.h, + * src/output.c, src/print.c, src/print_graph.c: Propagate. + * src/LR0.h, src/LR0.h (final_state): Is a state_t*. + +2002-06-30 Akim Demaille + + Make the test suite pass with warnings checked. + + * tests/actions.at (Printers and Destructors): Improve. + Avoid unsigned vs. signed issues. + * tests/calc.at: Don't exercise the scanner here, do it... + * tests/input.at (Torturing the Scanner): here. + + +2002-06-28 Paul Hilfinger + + * data/glr.c: Correct typo in Emacs-mode directive. Slightly + reorganize first lines parallel to yacc.c. + +2002-06-28 Akim Demaille + + * data/c.m4 (b4_copyright, b4_sint_type, b4_uint_type, b4_token_define) + (b4_token_enum, b4_token_defines): New, factored from... + * data/lalr1.cc, data/yacc.c, glr.c: here. + +2002-06-28 Akim Demaille + + * data/yacc.c (yydestruct, yysymprint): Pacify GCC warnings for + unused variables. + * src/output.c (merger_output): static. + +2002-06-28 Akim Demaille + + * src/reader.h: s/grammer_current_rule_merge_set/grammar_.../. + * src/conflicts.c (conflicts_total_count): `i' is unsigned, to + pacify GCC. + * src/output.c (save_row): Initialize all the variables to pacify GCC. + +2002-06-27 Paul Hilfinger + + Accumulated changelog for new GLR parsing features. + + * src/conflicts.c (count_total_conflicts): Change name to + conflicts_total_count. + * src/conflicts.h: Ditto. + * src/output.c (token_actions): Use the new name. + (output_conflicts): Change conflp => conflict_list_heads, and + confl => conflict_list for better readability. + * data/glr.c: Use the new names. + * NEWS: Add self to GLR announcement. + + * src/reader.c (free_merger_functions): Cleanup: XFREE->free. + + * doc/bison.texinfo (GLR Parsers): Make corrections suggested by + Akim Demaille. + + * data/bison.glr: Change name to glr.c + * data/glr.c: Renamed from bison.glr. + * data/Makefile.am: Add glr.c + + * src/getargs.c: + + * src/symlist.h: Add dprec and merger fields to symbol_list_s. + * src/symlist.c (symbol_list_new): Initialize dprec and merger fields. + + Originally 2002-06-16 Paul Hilfinger + + * data/bison.glr: Be sure to restore the + current #line when returning to the skeleton contents after having + exposed the input file's #line. + + Originally 2002-06-13 Paul Hilfinger + + * data/bison.glr: Bring up to date with changes to bison.simple. + + Originally 2002-06-03 Paul Hilfinger + + * data/bison.glr: Correct definitions that use b4_prefix. + Various reformatting. + (GLRStack): Make yychar (in YYPURE case) and yytokenp as part of stack. + (yyreportParseError, yyrecoverParseError, yyprocessOneStack): remove + yytokenp argument; now part of stack. + (yychar): Define to behave as documented. + (yyclearin): Ditto. + + Originally 2002-05-14 Paul Hilfinger + + * src/reader.h: Add declaration for free_merger_functions. + + * src/reader.c (merge_functions): New variable. + (get_merge_function): New function. + (free_merger_functions): New function. + (readgram): Check for %prec that is not followed by a symbol. + Handle %dprec and %merge declarations. + (packgram): Initialize dprec and merger fields in rules array. + + * src/output.c (conflict_tos, conflrow, conflict_table, conflict_list, + conflict_list_cnt, conflict_list_free): New variables. + (table_grow): Also grow conflict_table. + (prepare_rules): Output dprec and merger tables. + (conflict_row): New function. + (action_row): Output conflict lists for GLR parser. Don't use + default reduction in conflicted states for GLR parser so that there + are spaces for the conflict lists. + (save_row): Also save conflict information. + (token_actions): Allocate conflict list. + (merger_output): New function. + (pack_vector): Pack conflict table, too. + (output_conflicts): New function to output yyconflp and yyconfl. + (output_check): Allocate conflict_tos. + (output_actions): Output conflict tables, also. + (output_skeleton): Output b4_mergers definition. + (prepare): Output b4_max_rhs_length definition. + Use 'bison.glr' as default skeleton for GLR parsers. + + * src/gram.c (glr_parser): New flag. + (grammar_free): Call free_merger_functions. + + * src/conflicts.c (count_rr_conflicts): Augment to optionally count + all pairs of conflicting reductions, rather than just all tokens + causing conflicts. Needed to size conflict tables. + (conflicts_output): Modify call to count_rr_conflicts for new + interface. + (conflicts_print): Ditto. + (count_total_conflicts): New function. + + * src/reader.h (merger_list): New type. + (merge_functions): New variable. + + * src/lex.h (tok_dprec, tok_merge): New token types. + + * src/gram.h (rule_s): Add dprec and merger fields. + (glr_parser): New flag. + + * src/conflicts.h (count_total_conflicts): New function. + + * src/options.c (option_table): Add %dprec, %merge, and %glr-parser. + + * doc/bison.texinfo (Generalized LR Parsing): New section. + (GLR Parsers): New section. + (Language and Grammar): Mention GLR parsing. + (Table of Symbols): Add %dprec, %glr-parser, %merge, GLR + Correct typo ("tge" -> "the"). + + * data/bison.glr: New skeleton for GLR parsing. + + * tests/cxx-gram.at: New tests for GLR parsing. + + * tests/testsuite.at: Include cxx-gram.at. + + * tests/Makefile.am: Add cxx-gram.at. + + * src/parse-gram.y: + + * src/scan-gram.l: Add %dprec, %glr-parser, %merge. + + * src/parse-gram.y: Grammar for %dprec, %merge, %glr-parser. + +2002-06-27 Akim Demaille + + * src/options.h, src/options.c: Remove. + * src/getargs.c (short_options, long_options): New. + +2002-06-27 Akim Demaille + + * data/bison.simple, data/bison.c++: Rename as... + * data/yacc.c, data/lalr1.cc: these. + * doc/bison.texinfo (Environment Variables): Remove. + +2002-06-25 Raja R Harinath + + * src/getargs.c (report_argmatch): Initialize strtok(). + +2002-06-20 Akim Demaille + + * data/bison.simple (b4_symbol_actions): New, replaces... + (b4_symbol_destructor, b4_symbol_printer): these. + (yysymprint): Be sure to call YYPRINT only for tokens, and using + user token numbers. + +2002-06-20 Akim Demaille + + * data/bison.simple (yydestructor): Rename as... + (yydestruct): this. + +2002-06-20 Akim Demaille + + * src/symtab.h, src/symtab.c (symbol_type_set) + (symbol_destructor_set, symbol_precedence_set): The location is + the last argument. + Adjust all callers. + +2002-06-20 Akim Demaille + + * src/parse-gram.y (YYPRINT, yyprint): Don't mess with the parser + internals. + * src/reader.h, src/reader.c (grammar_current_rule_prec_set): + Takes a location. + * src/symtab.h, src/symtab.c (symbol_class_set) + (symbol_user_token_number_set): Likewise. + Adjust all callers. + Promote complain_at. + * tests/input.at (Type Clashes): Adjust. + +2002-06-20 Akim Demaille + + * data/bison.simple (YYLEX): Fix the declaration when + %pure-parser. + +2002-06-20 Akim Demaille + + * data/bison.simple (yysymprint): Don't print the token number, + just its name. + * tests/actions.at (Destructors): Rename as... + (Printers and Destructors): this. + Also exercise %printer. + +2002-06-20 Akim Demaille + + * data/bison.simple (YYDSYMPRINT): New. + Use it to remove many of the #if YYDEBUG/if (yydebug). + +2002-06-20 Akim Demaille + + * src/symtab.h, src/symtab.c (symbol_t): printer and + printer_location are new members. + (symbol_printer_set): New. + * src/parse-gram.y (PERCENT_PRINTER): New token. + Handle its associated rule. + * src/scan-gram.l: Adjust. + (handle_destructor_at, handle_destructor_dollar): Rename as... + (handle_symbol_code_at, handle_symbol_code_dollar): these. + * src/output.c (symbol_printers_output): New. + (output_skeleton): Call it. + * data/bison.simple (yysymprint): New. Cannot be named yyprint + since there are already many grammar files with a user `yyprint'. + Replace the calls to YYPRINT to calls to yysymprint. + * tests/calc.at: Adjust. + * tests/torture.at (AT_DATA_STACK_TORTURE): Remove YYPRINT: it was + taking advantage of parser very internal details (stack size!). + +2002-06-20 Akim Demaille + + * src/scan-gram.l: Complete the scanner with the missing patterns + to pacify Flex. + Use `quote' and `symbol_tag_get' where appropriate. + +2002-06-19 Akim Demaille + + * tests/actions.at (Destructors): Augment to test locations. + * data/bison.simple (yydestructor): Pass it the current location + if locations are enabled. + Prototype only when __STDC__ or C++. + Change the argument names to move into the yy name space: there is + user code here. + +2002-06-19 Akim Demaille + + * data/bison.simple (b4_pure_if): New. + Use it instead of #ifdef YYPURE. + +2002-06-19 Akim Demaille + + * data/bison.simple (b4_location_if): New. + Use it instead of #ifdef YYLSP_NEEDED. + +2002-06-19 Akim Demaille + + Prepare @$ in %destructor, but currently don't bind it in the + skeleton, as %location use is not cleaned up yet. + + * src/scan-gram.l (handle_dollar, handle_destructor_at) + (handle_action_at): New. + (handle_at, handle_action_dollar, handle_destructor_dollar): Take + a braced_code_t and a location as additional arguments. + (handle_destructor_dollar): Instead of requiring `b4_eval', just + unquote one when outputting `b4_dollar_dollar'. + Adjust callers. + * data/bison.simple (b4_eval): Remove. + (b4_symbol_destructor): Adjust. + * tests/input.at (Invalid @n): Adjust. + +2002-06-19 Zack Weinberg + + * doc/bison.texinfo: Document ability to have multiple + prologue sections. + +2002-06-18 Akim Demaille + + * src/files.c (compute_base_names): When computing the output file + names from the input file name, strip the directory part. + +2002-06-18 Akim Demaille + + * data/bison.simple.new: Comment changes. + Reported by Andreas Schwab. + +2002-06-18 Matt Kraai + + * data/bison.simple (yyoverflowlab): #ifndef yyoverflow, so that + there are no `label `yyoverflowlab' defined but not used' warnings + when yyoverflow is defined. + +2002-06-18 Akim Demaille + + * src/symtab.h, src/symtab.c (symbol_t): destructor_location is a + new member. + (symbol_destructor_set): Adjust. + * src/output.c (symbol_destructors_output): Output the destructor + locations. + Output the symbol name. + * data/bison.simple (b4_symbol_destructor): Adjust. + +2002-06-18 Cris Bailiff + and Akim Demaille + + * data/bison.simple.new (yyerrlab1): Be sure to pop and destroy + what's left on the stack when the error recovery hits EOF. + * tests/actions.at (Destructors): Complete to exercise this case. + +2002-06-17 Akim Demaille + + * data/m4sugar/m4sugar.m4 (m4_map): Recognize when the list of + arguments is really empty, not only equal to `[]'. + * src/symtab.h, src/symtab.c (symbol_t): `destructor' is a new + member. + (symbol_destructor_set): New. + * src/output.c (symbol_destructors_output): New. + * src/reader.h (brace_code_t, current_braced_code): New. + * src/scan-gram.l (BRACED_CODE): Use it to branch on... + (handle_dollar): Rename as... + (handle_action_dollar): this. + (handle_destructor_dollar): New. + * src/parse-gram.y (PERCENT_DESTRUCTOR): New. + (grammar_declaration): Use it. + * data/bison.simple (yystos): Is always defined. + (yydestructor): New. + * tests/actions.at (Destructors): New. + * tests/calc.at (_AT_CHECK_CALC_ERROR): Don't rely on egrep. + +2002-06-17 Akim Demaille + + * src/symlist.h, src/symlist.c (symbol_list_length): New. + * src/scan-gram.l (handle_dollar, handle_at): Compute the + rule_length only when needed. + * src/output.c (actions_output, token_definitions_output): Output + the full M4 block. + * src/symtab.c: Don't access directly to the symbol tag, use + symbol_tag_get. + * src/parse-gram.y: Use symbol_list_free. + +2002-06-17 Akim Demaille + + * src/reader.h, src/reader.c (symbol_list, symbol_list_new) + (symbol_list_prepend, get_type_name): Move to... + * src/symlist.h, src/symlist.c (symbol_list_t, symbol_list_new) + (symbol_list_prepend, symbol_list_n_type_name_get): here. + Adjust all callers. + (symbol_list_free): New. + * src/scan-gram.l (handle_dollar): Takes a location. + * tests/input.at (Invalid $n): Adjust. + +2002-06-17 Akim Demaille + + * src/reader.h, src/reader.c (symbol_list_new): Export it. + (symbol_list_prepend): New. + * src/parse-gram.y (%union): `list' is a new member. + (symbols.1): New, replaces... + (terms_to_prec.1, nterms_to_type.1): these. + * src/symtab.h, src/symtab.c (symbol_type_set, symbol_precedence_set) + Take a location as additional argument. + Adjust all callers. + +2002-06-15 Akim Demaille + + * src/parse-gram.y: Move %token in the declaration section so that + we don't depend upon CVS Bison. + +2002-06-15 Akim Demaille + + * src/state.h, src/state.c (state_rule_lookaheads_print): New. + * src/print.c (print_core): Use it. + +2002-06-15 Akim Demaille + + * src/conflicts.c (log_resolution): Accept the rule involved in + the sr conflicts instead of the lookahead number that points to + that rule. + (flush_reduce): Accept the current lookahead vector as argument, + instead of the index in LA. + (resolve_sr_conflict): Accept the current number of lookahead + bitset to consider for the STATE, instead of the index in LA. + (set_conflicts): Adjust. + * src/lalr.c, src/lalr.h, src/state.h: Comment changes. + +2002-06-15 Akim Demaille + + * src/state.h (state_t): Replace the `lookaheadsp' member, a + short, with `lookaheads' (bitsetv), `lookaheads_rule' (rule_t**). + Adjust all dependencies. + * src/lalr.c (initialize_lookaheads): Split into... + (states_lookaheads_count, states_lookaheads_initialize): these. + (lalr): Adjust. + +2002-06-15 Akim Demaille + + * src/gram.h, src/gram.c (grammar_rules_partial_print): New, eved + out of... + (grammar_rules_print): here. + * src/reduce.c (reduce_output): Use it. + * tests/reduce.at (Useless Rules, Reduced Automaton) + (Underivable Rules): Adjust. + +2002-06-15 Akim Demaille + + Copy BYacc's nice way to report the grammar. + + * src/gram.h, src/gram.c (grammar_rhs_print, grammar_rules_print): + New. + Don't print the rules' location, it is confusing and useless. + (rule_print): Use grammar_rhs_print. + * src/print.c (print_grammar): Use grammar_rules_print. + +2002-06-15 Akim Demaille + + Complete and rationalize `useless thing' warnings. + + * src/symtab.h, src/symtab.c (symbol_tag_get, symbol_tag_get_n) + (symbol_tag_print): New. + Use them everywhere in place of accessing directly the tag member. + * src/gram.h, src/gram.c (rule_print): New. + Use it where a rule used to be printed `by hand'. + * src/reduce.c (nonterminals_reduce): Report the use nonterminals. + (reduce_grammar_tables): Report the useless rules. + (reduce_print): Useless things are a warning, not an error. + Report it as such. + * tests/reduce.at (Useless Nonterminals, Useless Rules): + (Reduced Automaton, Underivable Rules): Adjust. + * tests/regression.at (Web2c Report, Web2c Report): Adjust. + * tests/conflicts.at (Unresolved SR Conflicts) + (Solved SR Conflicts): Adjust. + +2002-06-15 Akim Demaille + + Let symbols have a location. + + * src/symtab.h, src/symtab.c (symbol_t): Location is a new member. + (getsym): Adjust. + Adjust all callers. + * src/complain.h, src/complain.c (complain_at, fatal_at, warn_at): + Use location_t, not int. + * src/symtab.c (symbol_check_defined): Take advantage of the + location. + * tests/regression.at (Invalid inputs): Adjust. + +2002-06-15 Akim Demaille + + * src/parse-gram.y (YYLLOC_DEFAULT, current_lhs_location): New. + (input): Don't try to initialize yylloc here, do it in the + scanner. + * src/scan-gram.l (YY_USER_INIT): Initialize yylloc. + * src/gram.h (rule_t): Change line and action_line into location + and action_location, of location_t type. + Adjust all dependencies. + * src/location.h, src/location.c (empty_location): New. + * src/reader.h, src/reader.c (grammar_start_symbol_set) + (grammar_symbol_append, grammar_rule_begin, grammar_rule_end) + (grammar_current_rule_symbol_append) + (grammar_current_rule_action_append): Expect a location as argument. + * src/reader.c (grammar_midrule_action): Adjust to attach an + action's location as dummy symbol location. + * src/symtab.h, src/symtab.c (startsymbol_location): New. + * tests/regression.at (Web2c Report, Rule Line Numbers): Adjust + the line numbers. + +2002-06-14 Akim Demaille + + Grammar declarations may be found in the grammar section. + + * src/parse-gram.y (rules_or_grammar_declaration): New. + (declarations): Each declaration may end with a semicolon, not + just... + (grammar_declaration): `"%union"'. + (grammar): Branch to rules_or_grammar_declaration. + +2002-06-14 Akim Demaille + + * src/main.c (main): Invoke scanner_free. + +2002-06-14 Akim Demaille + + * src/output.c (m4_invoke): Extracted from... + (output_skeleton): here. + Free tempfile. + +2002-06-14 Akim Demaille + + * src/parse-gram.y (directives, directive, gram) + (grammar_directives, precedence_directives, precedence_directive): + Rename as... + (declarations, declaration, grammar, grammar_declaration) + (precedence_declaration, precedence_declarator): these. + (symbol_declaration): New. + +2002-06-14 Akim Demaille + + * src/files.c (action_obstack): Remove, unused. + (output_obstack): Remove it, and all its dependencies, as it is no + longer needed. + * src/reader.c (epilogue_set): Build the epilogue in the + muscle_obstack. + * src/output.h, src/output.c (muscle_obstack): Move to... + * src/muscle_tab.h, src/muscle_tab.h: here. + (muscle_init): Initialize muscle_obstack. + (muscle_free): New. + * src/main.c (main): Call it. + +2002-06-14 Akim Demaille + + * src/location.h: New, extracted from... + * src/reader.h: here. + * src/Makefile.am (noinst_HEADERS): Merge into + (bison_SOURCES): this. + Add location.h. + * src/parse-gram.y: Use location_t instead of Bison's. + * src/reader.h, src/reader.c (prologue_augment, epilogue_set): + Use location_t instead of ints. + +2002-06-14 Akim Demaille + + * data/bison.simple, data/bison.c++: Be sure to restore the + current #line when returning to the skeleton contents after having + exposed the input file's #line. + +2002-06-12 Akim Demaille + + * src/scan-gram.l (SC_BRACED_CODE): Don't use `<.*>', it is too + eager. + * tests/actions.at (Exotic Dollars): New. + +2002-06-12 Akim Demaille + + * src/scan-gram.l (SC_PROLOGUE): Don't eat characters amongst + ['"/] too eagerly. + * tests/input.at (Torturing the Scanner): New. + +2002-06-11 Akim Demaille + + * src/scan-gram.l (YY_OBS_INIT): Remove, replace with... + [SC_COMMENT,SC_STRING,SC_CHARACTER,SC_BRACED_CODE,SC_PROLOGUE] + [SC_EPILOGUE]: Output the quadrigraphs only when not in a comment. + * src/reader.h, src/scan-gram.l (scanner_initialize): this. + * src/reader.c (reader): Use it. + +2002-06-11 Akim Demaille + + * src/scan-gram.l (YY_OBS_FINISH): Don't set yylval. + Adjust all callers. + (scanner_last_string_free): New. + +2002-06-11 Akim Demaille + + * src/scan-gram.l (YY_INIT, YY_GROW, YY_FINISH): Rename as... + (YY_OBS_INIT, YY_OBS_GROW, YY_OBS_FINISH): these. + (last_string, YY_OBS_FREE): New. + Use them when returning an ID. + +2002-06-11 Akim Demaille + + Have Bison grammars parsed by a Bison grammar. + + * src/reader.c, src/reader.h (prologue_augment): New. + * src/reader.c (copy_definition): Remove. + + * src/reader.h, src/reader.c (gram_start_symbol_set, prologue_augment) + (grammar_symbol_append, grammar_rule_begin, grammar_midrule_action) + (grammar_current_rule_prec_set, grammar_current_rule_check) + (grammar_current_rule_symbol_append) + (grammar_current_rule_action_append): Export. + * src/parse-gram.y (symbol_list_new, symbol_list_symbol_append_ + (symbol_list_action_append): Remove. + Hook the routines from reader. + * src/scan-gram.l: In INITIAL, characters and strings are tokens. + * src/system.h (ATTRIBUTE_NORETURN, ATTRIBUTE_UNUSED): Now. + + * src/reader.c (read_declarations): Remove, unused. + + * src/parse-gram.y: Handle the epilogue. + * src/reader.h, src/reader.c (gram_start_symbol_set): Rename as... + (grammar_start_symbol_set): this. + * src/scan-gram.l: Be sure to ``use'' yycontrol to keep GCC quiet. + * src/reader.c (readgram): Remove, unused. + (reader): Adjust to insert eoftoken and axiom where appropriate. + + * src/reader.c (copy_dollar): Replace with... + * src/scan-gram.h (handle_dollar): this. + * src/parse-gram.y: Remove `%thong'. + + * src/reader.c (copy_at): Replace with... + * src/scan-gram.h (handle_at): this. + + * src/complain.h, src/complain.c (warn_at, complain_at, fatal_at): + New. + + * src/scan-gram.l (YY_LINES): Keep lineno synchronized for the + time being. + + * src/reader.h, src/reader.c (grammar_rule_end): New. + + * src/parse.y (current_type, current_class): New. + Implement `%nterm', `%token' support. + Merge `%term' into `%token'. + (string_as_id): New. + * src/symtab.h, src/symtab.c (symbol_make_alias): Don't pass the + type name. + + * src/parse-gram.y: Be sure to handle properly the beginning of + rules. + + * src/parse-gram.y: Handle %type. + * src/reader.c (grammar_rule_end): Call grammar_current_rule_check. + + * src/parse-gram.y: More directives support. + * src/options.c: No longer handle source directives. + + * src/parse-gram.y: Fix %output. + + * src/parse-gram.y: Handle %union. + Use the prologue locations. + * src/reader.c (parse_union_decl): Remove. + + * src/reader.h, src/reader.c (epilogue_set): New. + * src/parse-gram.y: Use it. + + * data/bison.simple, data/bison.c++: b4_stype is now either not + defined, then default to int, or to the contents of %union, + without `union' itself. + Adjust. + * src/muscle_tab.c (muscle_init): Don't predefine `stype'. + + * src/output.c (actions_output): Don't output braces, as they are + already handled by the scanner. + + * src/scan-gram.l (SC_CHARACTER): Set the user_token_number of + characters to themselves. + + * tests/reduce.at (Reduced Automaton): End the grammars with %% so + that the epilogue has a proper #line. + + * src/parse-gram.y: Handle precedence/associativity. + + * src/symtab.c (symbol_precedence_set): Requires the symbol to be + a terminal. + * src/scan-gram.l (SC_BRACED_CODE): Catch strings and characters. + * tests/calc.at: Do not use `%token "foo"' as it makes not sense + at all to define terminals that cannot be emitted. + + * src/scan-gram.l: Escape M4 characters. + + * src/scan-gram.l: Working properly with escapes in user + strings/characters. + + * tests/torture.at (AT_DATA_TRIANGULAR_GRAMMAR) + (AT_DATA_HORIZONTAL_GRAMMAR): Respect the `%token ID NUM STRING' + grammar. + Use more modest sizes, as for the time being the parser does not + release memory, and therefore the process swallows a huge amount + of memory. + + * tests/torture.at (AT_DATA_LOOKAHEADS_GRAMMAR): Adjust to the + stricter %token grammar. + + * src/symtab.h (associativity): Add `undef_assoc'. + (symbol_precedence_set): Do nothing when passed an undef_assoc. + * src/symtab.c (symbol_check_alias_consistence): Adjust. + + * tests/regression.at (Invalid %directive): Remove, as it is now + meaningless. + (Invalid inputs): Adjust to the new error messages. + (Token definitions): The new grammar doesn't allow too many + eccentricities. + + * src/lex.h, src/lex.c: Remove. + * src/reader.c (lastprec, skip_to_char, read_signed_integer) + (copy_character, copy_string2, copy_string, copy_identifier) + (copy_comment, parse_token_decl, parse_type_decl, parse_assoc_decl) + (parse_muscle_decl, parse_dquoted_param, parse_skel_decl) + (parse_action): Remove. + * po/POTFILES.in: Adjust. + +2002-06-11 Akim Demaille + + * src/reader.c (parse_action): Don't store directly into the + rule's action member: return the action as a string. + Don't require `rule_length' as an argument: compute it. + (grammar_current_rule_symbol_append) + (grammar_current_rule_action_append): New, eved out from + (readgram): here. + Remove `action_flag', `rulelength', unused now. + +2002-06-11 Akim Demaille + + * src/reader.c (grammar_current_rule_prec_set). + (grammar_current_rule_check): New, eved out from... + (readgram): here. + Remove `xaction', `first_rhs': useless. + * tests/input.at (Type clashes): New. + * tests/existing.at (GNU Cim Grammar): Adjust. + +2002-06-11 Akim Demaille + + * src/reader.c (grammar_midrule_action): New, Eved out from + (readgram): here. + +2002-06-11 Akim Demaille + + * src/reader.c (grammar_rule_begin, previous_rule, current_rule): + New. + (readgram): Use them as replacement of inlined code, crule and + crule1. + +2002-06-11 Akim Demaille + + * src/reader.c (grammar_end, grammar_symbol_append): New. + (readgram): Use them. + Make the use of `p' as local as possible. + +2002-06-10 Akim Demaille + + GCJ's parser requires the tokens to be defined before the prologue. + + * data/bison.simple: Output the token definition before the user's + prologue. + * tests/regression.at (Braces parsing, Duplicate string) + (Mixing %token styles): Check the output from bison. + (Early token definitions): New. + +2002-06-10 Akim Demaille + + * src/symtab.c (symbol_user_token_number_set): Don't complain when + assigning twice the same user number to a token, so that we can + use it in... + * src/lex.c (lex): here. + Also use `symbol_class_set' instead of hand written code. + * src/reader.c (parse_assoc_decl): Likewise. + +2002-06-10 Akim Demaille + + * src/symtab.c, src/symtab.c (symbol_class_set) + (symbol_user_token_number_set): New. + * src/reader.c (parse_token_decl): Use them. + Use a switch instead of ifs. + Use a single argument. + +2002-06-10 Akim Demaille + + Remove `%thong' support as it is undocumented, unused, duplicates + `%token's job, and creates useless e-mail traffic with people who + want to know what it is, why it is undocumented, unused, and + duplicates `%token's job. + + * src/reader.c (parse_thong_decl): Remove. + * src/options.c (option_table): Remove "thong". + * src/lex.h (tok_thong): Remove. + +2002-06-10 Akim Demaille + + * src/symtab.c, src/symtab.c (symbol_type_set) + (symbol_precedence_set): New. + * src/reader.c (parse_type_decl, parse_assoc_decl): Use them. + (value_components_used): Remove, unused. + +2002-06-09 Akim Demaille + + Move symbols handling code out of the reader. + + * src/reader.h, src/reader.c (errtoken, undeftoken, eoftoken) + (axiom): Move to... + * src/symtab.h, src/symtab.c: here. + + * src/gram.c (start_symbol): Remove: use startsymbol->number. + * src/reader.c (startval): Rename as... + * src/symtab.h, src/symtab.c (startsymbol): this. + * src/reader.c: Adjust. + + * src/reader.c (symbol_check_defined, symbol_make_alias) + (symbol_check_alias_consistence, symbol_pack, symbol_translation) + (token_translations_init) + Move to... + * src/symtab.c: here. + * src/reader.c (packsymbols): Move to... + * src/symtab.h, src/symtab.c (symbols_pack): here. + * src/symtab.h, src/symtab.c (symbol_make_alias): Takes SYMVAL as + argument. + +2002-06-03 Akim Demaille + + * src/muscle_tab.c (muscle_insert, muscle_find): Declarations, + then statements. + +2002-06-03 Akim Demaille + + * src/muscle_tab.c (muscle_find, muscle_insert): Don't initialize + structs with non literals. + * src/scan-skel.l: never-interactive. + * src/conflicts.c (enum conflict_resolution_e): No trailing + comma. + * src/getargs.c (usage): Split long literal strings. + Reported by Hans Aberg. + +2002-05-28 Akim Demaille + + * data/bison.c++: Use C++ ostreams. + (cdebug_): New member. + +2002-05-28 Akim Demaille + + * src/output.c (output_skeleton): Be sure to allocate enough room + for `/' _and_ for `\0' in full_skeleton. + +2002-05-28 Akim Demaille + + * data/bison.c++: Catch up with bison.simple: + 2002-05-24 Paul Hilfinger + and Paul Eggert : `error' handing. + 2002-05-26 Akim Demaille : stos_, token_number_, + and popping traces. + +2002-05-27 Paul Hilfinger + + * src/output.c (output_skeleton): Put an explicit path in front of + the skeleton file name, rather than relying on the -I directory, + to partially alleviate effects of having a skeleton file lying around + in the current directory. + +2002-05-27 Paul Hilfinger + + * src/conflicts.c (log_resolution): Correct typo: + obstack_printf should be obstack_fgrow1. + +2002-05-26 Akim Demaille + + * src/state.h (state_t): `solved_conflicts' is a new member. + * src/LR0.c (new_state): Set it to 0. + * src/conflicts.h, src/conflicts.c (print_conflicts) + (free_conflicts, solve_conflicts): Rename as... + (conflicts_print, conflicts_free, conflicts_solve): these. + Adjust callers. + * src/conflicts.c (enum conflict_resolution_e) + (solved_conflicts_obstack): New, used by... + (log_resolution): this. + Adjust to attach the conflict resolution to each state. + Complete the description with the precedence/associativity + information. + (resolve_sr_conflict): Adjust. + * src/print.c (print_state): Output its solved_conflicts. + * tests/conflicts.at (Unresolved SR Conflicts) + (Solved SR Conflicts): Exercise --report=all. + +2002-05-26 Akim Demaille + + * src/LR0.c, src/derives.c, src/gram.c, src/gram.h, src/lalr.c, + * src/nullable.c, src/output.c, src/print.c, src/print_graph.c, + * src/reader.c, src/reduce.c, src/state.h, src/symtab.h + (token_number_t, item_number_as_token_number) + (token_number_as_item_number, muscle_insert_token_number_table): + Rename as... + (symbol_number_t, item_number_as_symbol_number) + (symbol_number_as_item_number, muscle_insert_symbol_number_table): + these, since it is more appropriate. + +2002-05-26 Akim Demaille + + * tests/calc.at (AT_CHECK_CALC): Adjust: there are now additional + `Error:' lines. + * data/bison.simple (yystos) [YYDEBUG]: New. + (yyparse) [YYDEBUG]: Display the symbols which are popped during + error recovery. + * tests/regression.at (Web2c Actions): Adjust: yystos is output now. + +2002-05-25 Akim Demaille + + * doc/bison.texinfo (Debugging): Split into... + (Tracing): this new section, its former contents, and... + (Understanding): this new section. + * src/getargs.h, src/getargs.c (verbose_flag): Remove, replaced + by... + (report_flag): this. + Adjust all dependencies. + (report_args, report_types, report_argmatch): New. + (usage, getargs): Report/support -r, --report. + * src/options.h + (struct option_table_struct): Rename as.., + (struct option_table_s): this. + Rename the `set_flag' member to `flag' to match with getopt_long's + struct. + * src/options.c (option_table): Split verbose into an entry for + %verbose, and another for --verbose. + Support --report/-r, so remove -r from the obsolete --raw. + * src/print.c: Attach full item sets and lookaheads reports to + report_flag instead of trace_flag. + * lib/argmatch.h, lib/argmatch.c: New, from Fileutils 4.1. + +2002-05-24 Paul Hilfinger + and Paul Eggert + + * data/bison.simple (yyparse): Correct error handling to conform to + POSIX and yacc. Specifically, after syntax error is discovered, + do not reduce further before shifting the error token. + Clean up the code a bit by removing the labels yyerrdefault, + yyerrhandle, yyerrpop. + * NEWS: Document the above. + +2002-05-20 Paul Hilfinger + + * data/bison.simple (yyr1): Don't use yy_token_number_type as element + type; it isn't always big enough, since it doesn't necessarily + include non-terminals. + (yytranslate): Expand definition of yy_token_number_type, so that + the latter can be removed. + (yy_token_number_type): Remove, only one use. + * data/bison.c++ (r1_): Parallel change to yyr1 in bison.simple--- + don't use TokenNumberType as element type. + + * tests/regression.at: Modify expected output to agree with change + to yyr1 and yytranslate. + +2002-05-13 Florian Krohm + + * src/reader.c (parse_action): Use copy_character instead of + obstack_1grow. + +2002-05-13 Akim Demaille + + * tests/regression.at (Token definitions): Prototype yylex and + yyerror. + +2002-05-12 Paul Hilfinger + + * src/scan-skel.l: Correct off-by-one error in handling of __oline__. + * data/bison.simple (b4_sint_type, b4_uint_type): Correct to reflect + 32-bit arithmetic. + * data/bison.c++ (b4_sint_type, b4_uint_type): Ditto. + +2002-05-07 Akim Demaille + + * tests/synclines.at: Be sure to prototype yylex and yyerror to + avoid GCC warnings. + +2002-05-07 Akim Demaille + + Kill GCC warnings. + + * src/reduce.c (nonterminals_reduce): Don't loop over RITEM: loop + over the RHS of each rule. + * src/gram.h, src/gram.c (nritems): Is `unsigned int', not int. + * src/state.h (state_t): Member `nitems' is unsigned short. + * src/LR0.c (get_state): Adjust. + * src/reader.c (packgram): Likewise. + * src/output.c (GENERATE_MUSCLE_INSERT_TABLE): `max' is of type + `Type'. + (muscle_insert_int_table): Remove, unused. + (prepare_rules): Remove `max'. + +2002-05-06 Akim Demaille + + * src/closure.c (print_firsts): Display of the symbol tags. + (bitmatrix_print): Move to... + * lib/bitsetv-print.h, lib/bitsetv-print.c (bitsetv_matrix_dump): + here. + * tests/sets.at (Nullable, Broken Closure, Firsts): Adjust. + 2002-05-06 Akim Demaille * src/muscle_tab.c (muscle_m4_output): Must return TRUE for