X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/7a5350baa0741d45b2275a9e8f13112cbba97500..80cce3da95c82e26d2565bce3e5ace6bfc800208:/ChangeLog?ds=sidebyside diff --git a/ChangeLog b/ChangeLog index bad6225a..16b3b84f 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,10 +1,1449 @@ +2002-02-14 Akim Demaille + + * tests/regression.at (else): Adjust to Andreas' change. + +2002-02-14 Akim Demaille + + * lib/Makefile.am (EXTRA_DIST): Ship strnlen.c. + +2002-02-13 Andreas Schwab + + * src/output.c (output_rule_data): Don't output NULL, it might + not be defined yet. + +2002-02-11 Robert Anisko + + * data/bison.c++ (YYDEBUG, YYERROR_VERBOSE): After the prologue. + (Copyright notice): Update. + +2002-02-11 Akim Demaille + + * tests/regression.at (%nonassoc and eof): Don't include + nonportable headers. + +2002-02-08 Robert Anisko + + * data/bison.c++: Correct error recovery. Make the user able to + initialize the starting location. + +2002-02-07 Akim Demaille + + * tests/input.at: New. + +2002-02-07 Robert Anisko + + * data/bison.c++: Replace some direct m4 expansions by constants. Be + more consistent when naming methods and variables. Put preprocessor + directives around tables only needed for debugging. + +2002-02-07 Robert Anisko + + * data/bison.c++ (yy::b4_name::print_): New method, replaces yyprint in + C++ parsers. + (yy::b4_name::parse): Use print_. + +2002-02-07 Robert Anisko + + * data/bison.c++ (yy::b4_name::parse): Error recovery is back. + +2002-02-07 Robert Anisko + + * data/bison.c++ (yy::b4_name::error_): New method, replaces yyerror in + C++ parsers. + (yy::b4_name::parse): Build verbose error messages, and use error_. + +2002-02-06 Robert Anisko + + * data/bison.c++: Fix m4 quoting in comments. + +2002-02-06 Robert Anisko + + * data/bison.c++: Adjust the parser code. Fix some muscles that were + not expanded by m4. + +2002-02-05 Akim Demaille + + * data/bison.c++: Adjust to the M4 back end. + More is certainly needed. + +2002-02-05 Akim Demaille + + Give a try to M4 as a back end. + + * lib/readpipe.c: New, from wdiff. + * src/Makefile.am (DEFS): Define PKGDATADIR, not BISON_SIMPLE and + BISON_HAIRY. + * src/system.h (BISON_HAIRY, BISON_SIMPLE): Remove the DOS and VMS + specific values. Now it is m4 that performs the lookup. + * src/parse-skel.y: Remove. + * src/muscle_tab.c, src/muscle_tab.h (muscles_m4_output): New. + * src/output.c (actions_output, guards_output) + (token_definitions_output): No longer keeps track of the output + line number, hence remove the second argument. + (guards_output): Check against the guard member of a rule, not the + action member. + Adjust callers. + (output_skeleton): Don't look for the skeleton location, let m4 do + that. + Create `/tmp/muscles.m4'. This is temporary, a proper temporary + file will be used. + Invoke `m4' on m4sugar.m4, muscles.m4, and the skeleton. + (prepare): Given that for the time being changesyntax is not + usable in M4, rename the muscles using `-' to `_'. + Define `defines_flag', `output_parser_name' and `output_header_name'. + * src/output.h (actions_output, guards_output) + (token_definitions_output): Adjust prototypes. + * src/scan-skel.l: Instead of scanning the skeletons, it now + processes the output of m4: `__oline__' and `#output'. + * data/bison.simple: Adjust to be used by M4(sugar). + * tests/Makefile.am: Use check_SCRIPTS to make sure `bison' is up + to date. + * tests/bison.in: Use the secrete envvar `BISON_PKGDATADIR' + instead of the dead `BISON_SIMPLE' and `BISON_HAIRY'. + * data/m4sugar/m4sugar.m4, data/m4sugar/version.m4: New, + shamelessly stolen from CVS Autoconf. + +2002-02-05 Akim Demaille + + * lib/hash.c, lib/hash.h: Replace with Fileutils 4.1's version. + * configure.in: Check for the declarations of free and malloc. + * src/muscle_tab.c: Adjust. + +2002-02-05 Akim Demaille + + * src/muscle_tab.c (muscle_init): Don't default to NULL muscle + which have no values. + +2002-02-05 Akim Demaille + + * src/bison.simple, src/bison.hairy, src/bison.c++: Move to... + * data/: here. + +2002-01-29 Paul Eggert + + * src/bison.simple (YYSIZE_T): Do not define merely because + YYSTACK_USE_ALLOCA is nonzero or alloca or _ALLOCA_H are defined. + On some platforms, does not declare YYSTD (size_t). + +2002-01-27 Akim Demaille + + Fix `%nonassoc and eof'. + + * src/state.c (errs_dup): Aaaah! The failure was due to bytes + which were not properly copied! Replace + memcpy (res->errs, src->errs, src->nerrs); + with + memcpy (res->errs, src->errs, src->nerrs * sizeof (src->errs[0])); + !!! + * tests/regression.at (%nonassoc and eof): Adjust to newest + Autotest: `.' is not in the PATH. + +2002-01-27 Akim Demaille + + * tests/sets.at (AT_EXTRACT_SETS): New. + (Nullable): Use it. + (Firsts): New. + +2002-01-26 Akim Demaille + + * tests/actions.at, tests/calc.at, tests/headers.at, + * tests/torture.at: Adjust to the newest Autotest which no longer + forces `.' in the PATH. + +2002-01-25 Akim Demaille + + * tests/regression.at (%nonassoc and eof): New. + Suggested by Robert Anisko. + +2002-01-24 Akim Demaille + + Bison dumps core when trying to complain about broken input files. + Reported by Cris van Pelt. + + * src/lex.c (parse_percent_token): Be sure to set token_buffer. + * tests/regression.at (Invalid input: 1, Invalid input: 2): Merge + into... + (Invalid inputs): Strengthen: exercise parse_percent_token. + +2002-01-24 Robert Anisko + + * src/Makefile.am: Add bison.c++. + * src/bison.c++: New skeleton. + +2002-01-21 Paolo Bonzini + + * po/it.po: New. + +2002-01-21 Kees Zeelenberg + + * src/files.c (skeleton_find) [MSDOS]: Fix cp definition. + +2002-01-20 Marc Autret + + * src/files.c (compute_output_file_names): Fix + +2002-01-20 Marc Autret + + * tests/output.at: New test. + * src/files.c (compute_base_names): Don't map extensions when + the YACC flag is set, use defaults. + Reported by Evgeny Stambulchik. + +2002-01-20 Marc Autret + + * src/system.h: Need to define __attribute__ away for non-GCC + compilers as well (i.e. the vendor C compiler). + Suggested by Albert Chin-A-Young. + +2002-01-11 Tim Van Holder + + * lib/hash.h, lib/hash.c: Renamed __P to PARAMS and used the + canonical definition. + * src/system.h: Use the canonical definition for PARAMS (avoids + a conflict with the macro from lib/hash.h). + +2002-01-11 Akim Demaille + + * configure.in: Use AC_FUNC_STRNLEN. + Fixes the failures observed on AIX 4.3 by H.Merijn Brand. + +2002-01-09 Akim Demaille + + * src/files.c, src/files.h (output_infix): New. + (tab_extension): Remove. + (compute_base_names): Compute the former, drop the latter. + * src/output.c (prepare): Insert the muscles `output-infix', and + `output-suffix'. + * src/parse-skel.y (string, string.1): New. + (section.header): Use it. + (section.yacc): Remove. + (prefix): Remove too. + * src/scan-skel.l: Adjust. + * src/bison.simple, src/bison.hairy: Adjust. + +2002-01-09 Akim Demaille + + * configure.in (WERROR_CFLAGS): Compute it. + * src/Makefile.am (CFLAGS): Pass it. + * tests/atlocal.in (CFLAGS): Idem. + * src/files.c: Fix a few warnings. + (get_extension_index): Remove, unused. + +2002-01-08 Akim Demaille + + * src/getargs.c (AS_FILE_NAME): New. + (getargs): Use it to convert DOSish file names. + * src/files.c (base_name): Rename as full_base_name to avoid + clashes with `base_name ()'. + (filename_split): New. + (compute_base_names): N-th rewrite, using filename_split. + +2002-01-08 Akim Demaille + + * lib/basename.c, lib/dirname.h, lib/dirname.c, lib/memrchr.c: + New, stolen from the Fileutils 4.1. + * lib/Makefile.am (libbison_a_SOURCES): Adjust. + * configure.in: Check for the presence of memrchr, and of its + prototype. + +2002-01-07 Tim Van Holder + + * lib/hash.h (__P): Added definition for this macro. + * src/Makefile.am: Add parse-skel.c and scan-skel.c to + BUILT_SOURCES, to ensure they are generated first. + * src/parse-skel.y: Use YYERROR_VERBOSE instead of + %error-verbose to allow bootstrapping with bison 1.30x. + +2002-01-06 Akim Demaille + + * src/reader.c (parse_braces): Don't fetch the next char, the + convention is to fetch on entry. + * tests/torture.at (GNU Cim Grammar): Reintroduce their weird + 'switch' without a following semicolon. + * tests/regression.at (braces parsing): New. + +2002-01-06 Akim Demaille + + Bison is dead wrong in its RR conflict reports. + + * tests/torture.at (GNU Cim Grammar): New. + * src/conflicts.c (count_rr_conflicts): Fix. + +2002-01-06 Akim Demaille + + Creating package.m4 from configure.ac causes too many problems. + + * tests/Makefile.am (package.m4): Create it by hand, + AC_CONFIG_TESTDIR no longer does in the most recent CVS Autoconf. + +2002-01-06 Akim Demaille + + * src/Makefile.am (bison_SOURCES): Add parse-skel.h and + skeleton.h. + +2002-01-04 Paul Eggert + + * doc/bison.texinfo (Debugging): + Remove YYSTDERR; it's no longer defined or used. + Also, s/cstdio.h/cstdio/. + +2002-01-03 Akim Demaille + + * tests/bison.in, tests/atlocal.in: Adjust to CVS Autoconf. + +2002-01-03 Akim Demaille + + * src/parse-skel.y (process_skeleton): Don't bind the parser's + tracing code to --trace, wait for a better --trace option, with + args. + +2002-01-03 Akim Demaille + + * src/bison.simple (YYSTDERR): Remove, replace `stderr'. + The ISO C++ standard is extremely clear about it: stderr is + considered a macro, not a regular symbol (see table 94 `Header + synopsis', [lib.c.files] 27.8.2 C Library files). + Therefore std:: does not apply to it. It still does with fprintf. + Also, s/cstdio.h/cstdio/. + +2002-01-03 Akim Demaille + + * lib/quotearg.c: Use `#include "..."' instead of `#include <...>' + for non system headers. + +2002-01-02 Akim Demaille + + Equip the skeleton chain with location tracking, runtime trace, + pure parser and scanner. + + * src/parse-skel.y: Request a pure parser, locations, and prefix + renaming. + (%union): Having several members with the same type does not help + type mismatches, simplify. + (YYPRINT, yyprint): New. + (yyerror): ``Rename'' (there is a #define yyerror skel_error) as... + (skel_error): this. + Handle locations. + * src/scan-skel.l: Adjust to these changes. + * src/skeleton.h (LOCATION_RESET, LOCATION_LINES, LOCATION_STEP) + (LOCATION_PRINT, skel_control_t): New. + +2001-12-30 Akim Demaille + + * src/parse-skel.y: Get rid of the shift/reduce conflict: + replace `gb' with BLANKS. + * src/scan-skel.l: Adjust. + +2001-12-30 Akim Demaille + + * src/system.h: We don't need nor want bcopy. + Throw away MS-DOS crap: we don't need getpid. + * configure.in: We don't need strndup. It was even causing + problems: because Flex includes the headers *before* us, + _GNU_SOURCE is not defined by config.h, and therefore strndup was + not visible. + * lib/xstrndup.c: New. + * src/scan-skel.l: Use it. + Be sure to initialize yylval.muscle member when scanning a MUSCLE. + * src/parse-skel.y: Use %directives instead of #defines. + +2001-12-30 Akim Demaille + + * src/skeleton.h: New. + * src/output.c (output_parser, output_master_parser): Remove, dead + code. + * src/output.h (get_lines_number, actions_output, guards_output) + (token_definitions_output): Prototype them. + * src/parse-skel.y: Add the license notice. + Include output.h and skeleton.h. + (process_skeleton): Returns void, and takes a single parameter. + * src/scan-skel.l: Add the license notice. + Include skeleton.h. + Don't use %option yylineno: it seems that then Flex imagines + REJECT has been used, and therefore it won't reallocate its + buffers (which makes no other sense to me than a bug). It results + in warnings for `unused: yy_flex_realloc'. + +2001-12-30 Robert Anisko + + * src/muscle_tab.h (MUSCLE_INSERT_INT, MUSCLE_INSERT_STRING) + (MUSCLE_INSERT_PREFIX): ...to there. + * src/output.c (MUSCLE_INSERT_INT, MUSCLE_INSERT_STRING) + (MUSCLE_INSERT_PREFIX): Move from here... + + * src/bison.hairy: Add a section directive. Put braces around muscle + names. This parser skeleton is still broken, but Bison should not + choke on a bad muscle 'syntax'. + * src/bison.simple: Add a section directive. Put braces around muscle + names. + + * src/files.h (strsuffix, stringappend): Add declarations. + (tab_extension): Add declaration. + (short_base_name): Add declaration. + + * src/files.c (strsuffix, stringappend): No longer static. These + functions are used in the skeleton parser. + (tab_extension): New. + (compute_base_names): Use the computations done in this function + to guess if the generated parsers should have '.tab' in their + names. + (short_base_name): No longer static. + + * src/output.c (output_skeleton): New. + (output): Disable call to output_master_parser, and give a try to + a new skeleton handling system. + (guards_output, actions_output): No longer static. + (token_definitions_output, get_lines_number): No longer static. + + * configure.in: Use AM_PROG_LEX and AC_PROG_YACC. + + * src/Makefile.am (bison_SOURCES): Add scan-skel.l and + parse-skel.y. + + * src/parse-skel.y: New file. + * src/scan-skel.l: New file. + +2001-12-29 Akim Demaille + + %name-prefix is broken. + + * src/files.c (spec_name_prefix): Initialize to NULL, not to "yy". + Adjust all dependencies. + * tests/headers.at (export YYLTYPE): Strengthen this test: use + %name-prefix. + + Renaming yylval but not yylloc is not consistent. Now we do. + + * src/bison.simple: Prefix yylloc if used. + * doc/bison.texinfo (Decl Summary): Document that. + +2001-12-29 Akim Demaille + + * doc/bison.texinfo: Promote `%long-directive' over + `%long_directive'. + Remove all references to fixed-output-files, yacc is enough. + +2001-12-29 Akim Demaille + + * src/bison.simple: Define YYDEBUG and YYERROR_VERBOSE *after* the + user prologue. These are defaults. + * tests/actions.at (Mid-rule actions): Make sure the user can + define YYDEBUG and YYERROR_VERBOSE. + +2001-12-29 Akim Demaille + + * src/output.c (header_output): Don't forget to export YYLTYPE and + yylloc. + * tests/headers.at (export YYLTYPE): New, make sure it does. + * tests/regression.at (%union and --defines, Invalid CPP headers): + Move to... + * tests/headers.at: here. + +2001-12-29 Akim Demaille + + * src/gram.h (rule_s): Member `assoc' is of type `associativity'. + +2001-12-29 Akim Demaille + + * tests/actions.at (Mid-rule actions): Output on a single line + instead of several. + +2001-12-29 Akim Demaille + + * doc/bison.texinfo: Formatting changes. + +2001-12-29 Akim Demaille + + Don't store the token defs in a muscle, just be ready to output it + on command. Now possible via `symbols'. Fixes a memory leak. + + * src/output.c (token_definitions_output): New. + (output_parser, header_output): Use it. + * src/reader.c (symbols_save): Remove. + +2001-12-29 Akim Demaille + + * src/bison.simple: Do not provide a default for YYSTYPE and + YYLTYPE before the user's prologue. Otherwise it's hardly... a + default. + +2001-12-29 Akim Demaille + + Mid-rule actions are simply... ignored! + + * src/reader.c (readgram): Be sure to attach mid-rule actions to + the empty-rule associated to the dummy symbol, not to the host + rule. + * tests/actions.at (Mid-rule actions): New. + +2001-12-29 Akim Demaille + + Memory leak. + + * src/reader.c (reader): Free grammar. + +2001-12-29 Akim Demaille + + Memory leak. + + * src/LR0.c (new_itemsets): Don't allocate `shift_symbol' here, + since it allocates it for each state, although only one is needed. + (allocate_storage): Do it here. + +2001-12-29 Akim Demaille + + * src/options.h, src/options.c (create_long_option_table): Rename + as... + (long_option_table_new): this, with a clearer prototype. + (percent_table): Remove, unused, + * src/getargs.c (getargs): Adjust. + +2001-12-29 Akim Demaille + + * src/LR0.c, src/conflicts.c, src/lalr.c, src/lalr.h, src/output.c + * src/print.c, src/print_graph.c, src/state.h: Rename state_table + as states. + +2001-12-29 Akim Demaille + + * src/lalr.c (build_relations): Rename `states' as `states1'. + Sorry, I don't understand exactly what it is, no better name... + +2001-12-29 Akim Demaille + + * src/closure.c, src/conflicts.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: Rename rule_table + as rules. + +2001-12-29 Akim Demaille + + * src/gram.c (rprec, rprecsym, rassoc): Remove, unused since long + ago. + +2001-12-29 Akim Demaille + + * src/reader.c, src/reader.h (user_toknums): Remove. + Adjust all users to use symbols[i]->user_token_number. + +2001-12-29 Akim Demaille + + * src/gram.c, src/gram.h (sprec, sassoc): Remove. + Adjust all users to use symbols[i]->prec or ->assoc. + +2001-12-29 Akim Demaille + + * src/reader.c, src/reader.h (tags): Remove. + Adjust all users to use symbols[i]->tag. + +2001-12-29 Akim Demaille + + * src/gram.h, src/gram.c (symbols): New, similar to state_table + and rule_table. + * src/reader.c (packsymbols): Fill this table. + Drop sprec. + * src/conflicts.c (resolve_sr_conflict): Adjust. + * src/reduce.c (reduce_grammar): Adjust: just sort symbols, a + single table. + Use symbols[i]->tag instead of tags[i]. + +2001-12-29 Akim Demaille + + * tests/calc.at (_AT_DATA_CALC_Y): Also use %union. + In addition, put a comment in there, to replace... + * tests/regression.at (%union and C comments): Remove. + +2001-12-29 Akim Demaille + + * tests/regression.at (Web2c Actions): Blindly move the actual + output as expected output. The contents *seem* right to me, but I + can't pretend reading perfectly parser tables... Nonetheless, all + the other tests pass correctly, the table look OK, even though the + presence of `$axiom' is to be noted: AFAICS it is useless (but + harmless). + +2001-12-29 Akim Demaille + + * src/reader.c (readgram): Don't add the rule 0 if there were no + rules read. In other words, add it _after_ having performed + grammar sanity checks. + Fixes the `tests/regression.at (Invalid input: 1)' Failure. + +2001-12-29 Akim Demaille + + * tests/regression.at (Web2c Report): Catch up: the rule 0 is now + visible, and some states have now a different number. + +2001-12-29 Akim Demaille + + * 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 + + 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 + + * 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 + + * 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 + + * 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 + + * 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 + + * src/output.c: Comment changes. + +2001-12-27 Paul Eggert + + * 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 + + * 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 + + * tests/regression.at (Unresolved SR Conflicts): + (Solved SR Conflicts, Rule Line Numbers): Adjust to the changes + below. + +2001-12-27 Akim Demaille + + * 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 $'. + * tests/set.at: Adjust: rule 0 is now displayed, and since the + number of the states has changed (the final state is no longer + necessarily the last), catch up. + +2001-12-27 Akim Demaille + + Try to make the use of the eoftoken valid. Given that its value + is 0 which was also used as a sentinel in ritem, (i) make sure >= 0 + is used instead of > 0 where appropriate, (ii), depend upon nritems + instead of the 0-sentinel. + + * src/gram.h, src/gram.c (nritems): New. + Expected to be duplication of nitems, but for the time being... + * src/reader.c (packgram): Assert nritems and nitems are equal. + * src/LR0.c (allocate_itemsets, new_itemsets): Adjust. + * src/closure.c (print_closure, print_fderives): Likewise. + * src/gram.c (ritem_print): Likewise. + * src/print.c (print_core, print_grammar): Likewise. + * src/print_graph.c: Likewise. + +2001-12-27 Akim Demaille + + * src/main.c (main): If there are complains after grammar + reductions, then output the report anyway if requested, then die. + * src/symtab.c (bucket_new): Initialize `value' to -1, not 0. + * src/reader.c (eoftoken): New. + (parse_token_decl): If the token being defined has value `0', it + is the eoftoken. + (packsymbols): No longer hack `tags' to insert `$' 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 + 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. + 2001-12-05 Akim Demaille * src/output.c (action_row): De-obfuscate 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 @@ -1932,7 +3371,7 @@ * 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.