X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/945e396c8a4fcaa24f2445766a7098bf3c60f904..f124d4233fcdb7c5e5cb966cbe24f060e737190f:/ChangeLog diff --git a/ChangeLog b/ChangeLog index 86f8a353..e151d0bc 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,954 @@ +2007-05-20 Joel E. Denny + + Extend the front-end API for %define variables to more completely + mirror the back-end. This will be useful in the future. + * data/bison.m4 (b4_percent_define_get, b4_percent_define_ifdef): + Update comments to mention the new front-end counterparts of these + macros. + * src/muscle_tab.c (MUSCLE_COMMON_DECODE): New macro with common code + for muscle_string_decode and muscle_location_decode. + (muscle_string_decode): New static function. + (muscle_location_decode): Use MUSCLE_COMMON_DECODE. + (muscle_percent_define_get, muscle_percent_define_ifdef): New + functions. + (muscle_percent_define_flag_if): Use muscle_percent_define_ifdef and + muscle_percent_define_get to mimic the b4_percent_define_flag_if + implementation more closely. + (muscle_percent_define_invalid_value): New function. + * src/muscle_tab.h (muscle_percent_define_get, + muscle_percent_define_ifdef, muscle_percent_define_invalid_value): + Prototype. + +2007-05-07 Joel E. Denny + + * NEWS (2.3a+): Mention yesterday's state-removal change. + (2.3a): Remove the %language entry, which was added after 2.3a. + * src/LR0.c, src/closure.c, src/closure.h, src/conflicts.c, + src/conflicts.h, src/lalr.c, src/lalr.h, src/print.c, + src/print_graph.c, src/state.c, src/state.h, tests/conflicts.at, + tests/existing.at: Update copyright date. + +2007-05-06 Joel E. Denny + + If conflict resolution makes states unreachable, remove those states, + report rules that are then unused, and don't report conflicts in those + states. + * src/conflicts.c, src/conflicts.h (conflicts_update_state_numbers): + New global function. + * src/lalr.c, src/lalr.h (lalr_update_state_numbers): New global + function. + * src/main.c (main): After conflict resolution, remove the unreachable + states and update all data structures that reference states by number. + * src/state.c (state_new): Initialize each state's reachable member to + false. + (state_mark_reachable_states): New static function. + (state_remove_unreachable_states): New global function. + * src/state.h (struct state): Add member bool reachable. + (state_remove_unreachable_states): Prototype. + * tests/conflicts.at (Unreachable States After Conflict Resolution): + New test case. + * tests/existing.at (GNU pic Grammar): Update test case output now that + an unused rule is discovered. + +2007-05-06 Joel E. Denny + + Minor code cleanup in parser table construction. + * src/LR0.c (new_itemsets): Use item_number_is_symbol_number. + (new_itemsets, save_reductions): Update for rename to nitemset. + * src/closure.c (nritemset): Rename to... + (nitemset): ... this since the "r" appears to meaningless and isn't + used in the comments. + (closure): Update for rename. + * src/closure.h (nritemset): Update extern to... + (nitemset): ... this. + * src/lalr.c (LA): Fix a typo in comments. + * src/print.c (print_core): Update for rename to nitemset. + * src/print_graph.c (print_graph): Likewise. + * src/state.h: Fix some typos in header comments. + +2007-04-04 Paul Eggert + + * THANKS: Use ASCII for Sebastien Fricker's name. Bison source + still sticks to ASCII. Sorry! + + * README-hacking: New file, taken mostly from coreutils, with changes + for Bison. Contains much of the contents of: + * README-cvs: Remove. + * bootstrap: Sync from gnulib. + * build-aux/.cvsignore: Remove *.t, mkinstalldirs. + * lib/.cvsignore: Add wchar.h, wctype.h. Remove exit.h. + +2007-03-10 Joel E. Denny + + * doc/bison.texinfo (Destructor Decl): Fix typo reported by Sebastian + Setzer. + (Java Differences): Fix some typos. + * THANKS: Add Sebastian Setzer. + +2007-03-07 Paolo Bonzini + + * data/java.m4 (b4_single_class_if): Remove. + (b4_abstract_if): Look at "%define abstract". + (b4_lexer_if): New. + (b4_union_name): Rename... + (b4_yystype): ... to this. Map to "%define stype". + (b4_rhs_value, b4_parse_param_decl, b4_lex_param_decl, + b4_maybe_throws): Fix quoting. + (b4_lex_param_call): Move below to keep b4_*_param_decl close. + * data/lalr1.java (Lexer interface): Always define. + (Lexer interface within parser class): Remove. + (YYLexer class): New, used when "%code lexer" is present. + (constructor): When "%code lexer" is used, pass %lex-param + to the lexer constructor. + (yylex, yyparse): Remove %lex-param from method invocations + (YYStack, yyaction, yyparse): Rename b4_union_name to b4_yystype. + + * doc/bison.texinfo (Java Bison Interface): Mention "%define + abstract". Rename "%define union_name" to "%define stype". + Rename method names according to previous patch. + (Java Scanner Interface): Describe "%code lexer" instead of + "%pure-parser" and "%define single_class". + (Java Differences): Mention "%code lexer". + + * tests/java.at (_AT_DATA_JAVA_CALC_Y): Remove final argument. + Include scanner here, using macros from tests/local.at. + (AT_DATA_CALC_Y): Remove final argument. + (_AT_CHECK_JAVA_CALC): Likewise. + (AT_CHECK_JAVA_CALC): Likewise. Test all four combinations + of %locations and %error-verbose. + (main): Test with and without %lex-param. + * tests/local.at (_AT_BISON_OPTION_PUSHDEFS): Push AT_LEXPARAM_IF. + (AT_BISON_OPTION_POPDEFS): Pop it. + +2007-03-07 Juan Manuel Guerrero + + DJGPP spefic issue. Inhibit the use of disallowed characters for + file name genertion on Win98, WinXP, etc. These are |<>":?*\ + and concern testsuite case 46. + * Makefile.am: djgpp/testsuite.sed added to EXTRA_DIST + * djgpp/testsuite.sed: Inhibit the use of disallowed characters. + * djgpp/config.bat: Inhibit the use of disallowed characters. + +2007-03-02 Joel E. Denny + + Miscellaneous %define and %code cleanup. + * data/bison.m4 (b4_percent_define_flag_if): Correct comments on how + values are interpreted. + * doc/bison.texinfo (Decl Summary): Clean up and extend %define + documentation a little more. + * src/muscle_tab.c (MUSCLE_USER_NAME_CONVERT, + muscle_percent_define_insert, muscle_percent_code_grow): New + functions/macros. + * src/muscle_tab.h (muscle_percent_define_insert, + muscle_percent_code_grow): Prototype. + * src/parse-gram.y (prologue_declaration): Use + muscle_percent_define_insert and muscle_percent_code_grow when parsing + %define and %code directives. + + Make it easy to share %define boolean variables between the front-end + and back-end. Though not used yet, this will be useful in the future. + * data/bison.m4 (b4_check_user_names): Rewrite comments to talk about + Bison uses of names rather than just skeleton uses of names. + (b4_percent_define_get, b4_percent_define_ifdef): Rename + b4_percent_define_skeleton_variables(VARIABLE) to + b4_percent_define_bison_variables(VARIABLE). + (b4_percent_code_get, b4_percent_code_ifdef): Rename + b4_percent_code_skeleton_qualifiers(QUALIFIER) to + b4_percent_code_bison_qualifiers(QUALIFIER). + (b4_check_user_names_wrap): Update for renames. + * src/muscle_tab.c, src/muscle_tab.h (muscle_percent_define_flag_if, + muscle_percent_define_default): New functions mimicking + b4_percent_define_flag_if and b4_percent_define_default. + + For %define variables, report locations for invalid values and + redefinitions. + * data/bison.m4 (b4_percent_define_flag_if): Read + b4_percent_define_loc(VARIABLE) to report the location of an invalid + value for VARIABLE. + (b4_percent_define_default): Save a special location in + b4_percent_define_loc(VARIABLE) in case the default value for VARIABLE + must later be reported as invalid. + * src/muscle_tab.c (muscle_location_grow, muscle_location_decode): New + functions. + (muscle_percent_define_insert): Record the location of VARIABLE in + muscle percent_define_loc(VARIABLE), and use it to report the previous + location for a redefinition. + (muscle_percent_define_flag_if): Update like b4_percent_define_flag_if. + (muscle_percent_define_default): Update like b4_percent_define_default. + (muscle_grow_user_name_list): Rename to... + (muscle_user_name_list_grow): ... this for consistency and use + muscle_location_grow. + * src/muscle_tab.h (muscle_location_grow): Prototype. + * tests/input.at (%define errors): Update expected output. + * tests/skeletons.at (%define boolean variables: invalid skeleton + defaults): New test case. + +2007-02-28 Joel E. Denny + + * src/print.c (lookahead_set, state_default_rule): Remove. + (print_reductions): Replace state_default_rule invocation with + equivalent use of yydefact, which was computed in token_actions in + tables.c. + (print_results): Don't allocate lookahead_set. + +2007-02-27 Paolo Bonzini + + * data/lalr1.java: Prefix all private members with yy. + +2007-02-24 Joel E. Denny + + Use YYFPRINTF instead of fprintf where appropriate. Reported by + Sebastien Fricker at + . + * THANKS: Add Sebastien Fricker. + * data/glr.c, data/push.c, data/yacc.c (yy_reduce_print): Implement. + * doc/bison.texinfo (Tracing): Make it clearer that YYFPRINTF must + accept a variable number of arguments. + +2007-02-19 Joel E. Denny + + * bootstrap: Remove occurrences of .#bootmp from lib/Makefile. + +2007-02-13 Juan Manuel Guerrero + + * djgpp/config.bat: Adjustments concerning the use of autoconf 2.61. + * djgpp/config.sed: Adjustments concerning the use of autoconf 2.61. + * djgpp/config.site: Adjustments concerning the use of autoconf 2.61. + +2007-02-11 Paul Eggert + + Undo my 2007-02-07 change, switching back to the c-strcase module + introduced in the 2007-02-03 change. Bruno Haible reported that + the 2007-02-07 change would be dangerous in Turkish if we add a + language whose name contains "i", since "i" is not lowercase "I" + in Turkish. + * bootstrap.conf (gnulib_modules): Add c-strcase. Remove strcase. + * lib/.cvsignore: Add c-ctype.c, c-ctype.h, c-strcase.h, + c-strcasecomp.c, c-strncasecmp.c. Remove strcasecmp.c, strncasecmp.c. + * m4/.cvsignore: Remove strcase.m4. + * src/getargs.c: Revert 2007-02-07 change, as follows. + Include c-strcase.h. + (language_argmatch): Use c_strcasecmp rather than strcasecmp. + +2007-02-11 Bruno Haible + + Enable the Java related testsuite tests when the only Java compiler + found is a gcj < 4.3. Discussed at + . + * configure.ac (gt_JAVACOMP): Don't specify a target_version. + +2007-02-11 Joel E. Denny + + * data/Makefile.am: Update copyright date. + * data/push.c (yypull_parse): Report memory exhaustion and return 2 if + yypstate_new returns NULL. + (yypstate_new): Return NULL if malloc does. + * src/reader.c (packgram): Move translation of rule actions from the + beginning of packgram to... + (check_and_convert_grammar): ... here right before packgram is invoked + so it's easier to write more complete comments, and remove redundant + code. + +2007-02-10 Joel E. Denny + + As in semantic actions, make @$ in %initial-action, %destructor, and + %printer imply %locations. + * src/scan-code.l (SC_SYMBOL_ACTION): Set locations_flag = true when + scanning @$. + * tests/actions.at (AT_CHECK_ACTION_LOCATIONS): New macro supporting... + (@$ in %initial-action implies %locations, + @$ in %destructor implies %locations, + @$ in %printer implies %locations): ... these new test cases. + +2007-02-07 Paul Eggert + + Undo most of the 2007-02-03 change, switching to the strcase module + now that gnulib strcase has been fixed. + * bootstrap.conf (gnulib_modules): Remove c-strcase. Add strcase. + * lib/.cvsignore: Remove c-ctype.c, c-ctype.h, c-strcase.h, + c-strcasecomp.c, c-strncasecmp.c. Add strcasecmp.c, strncasecmp.c + * m4/.cvsignore: Add strcase.m4. + * src/getargs.c: Revert 2007-02-03 change, as follows. + Don't include c-strcase.h. + (language_argmatch): Use strcasecmp rather than c_strcasecmp. + strcasecmp has "unspecified behavior" outside the POSIX locale, + but it works fine in practice if at least one argument is ASCII, + as is the case in Bison. + +2007-02-07 Paolo Bonzini + + * tests/java.at: Skip tests if only one of javac/java is present. + Reported by Joel E. Denny. + * tests/atlocal.in: Adjust copyright years. + +2007-02-05 Paolo Bonzini + + * data/lalr1.java (Stack): Work around old verifiers that disallow + access to the private fields of an inner class, from the outer class. + We can make Stack's fields public because user code doesn't have access + to the instance of Stack used by parse(). Reported by Paul Eggert. + +2007-02-03 Paul Eggert + + * .cvsignore: Add javacomp.sh, javaexec.sh. Is this really + the right spot for these files? + * bootstrap.conf (gnulib_modules): Add c-strcase. + * lib/.cvsignore: Add c-ctype.c c-ctype.h, c-strcasecomp.c, + c-strncasecmp.c. + * src/getargs.c: Include c-strcase.h. + (language_argmatch): Use c_strcasecmp rather than strcasecmp, + to avoid unspecified behavior. + +2007-02-01 Joel E. Denny + + * doc/bison.texinfo (Decl Summary): Correct typo. + +2007-01-30 Paolo Bonzini + + * data/bison.m4 (b4_percent_define_flag_if): Don't treat 0 as false. + Complain if the value does not match empty, "true" or "false". + * data/c++.m4: Adjust default definitions of %define variables. + * data/java.m4: Adjust default definitions of %define variables. + * doc/bison.texinfo (Decl Summary): Adjust the %define entry according + to above behavior. + * tests/input.at (Boolean %define variables): Test new behavior. + +2007-01-29 Paolo Bonzini + + * NEWS: Mention java. + * TODO: Remove things that are done. + * bootstrap.conf: Add javacomp-script and javaexec-script. + * configure.ac: Invoke gt_JAVACOMP and gt_JAVAEXEC. + + * data/Makefile.am: Add new files. + * data/java-skel.m4: New. + * data/java.m4: New. + * data/lalr1.java: New. + + * doc/bison.texinfo: Put "A Complete C++ Example" under + C++ Parsers. Add Java Parsers. Put C++ Parsers and Java Parsers + under Other Languages. + + * src/getargs.c (valid_languages): Add Java. + * src/getargs.h (struct bison_language): Update size of string fields. + + * tests/Makefile.am: Add java.at. + * tests/atlocal.in: Add CONF_JAVA and CONF_JAVAC. + * tests/java.at: New. + * tests/testsuite.at: Include it. + +2007-01-28 Joel E. Denny + + Clean up. + * src/scan-skel.l (at_directive_perform): Add at_directive_argc and + at_directive_argv arguments so these no longer have to be global + variables. Also, update the implementation for the following changes. + (fail_for_at_directive_too_many_args, + fail_for_at_directive_too_few_args): Add at_directive_name argument. + (at_directive_name): Remove as at_directive_argv[0] will be used for + this now. + (AT_DIRECTIVE_ARGC_MAX): Increment to make space in at_directive_argv + for the directive name. + (at_directive_argc, at_directive_argv): Make these local within + skel_lex instead of global. + (INITIAL): Update directive start action for above changes. + (SC_AT_DIRECTIVE_ARG): Rename to... + (SC_AT_DIRECTIVE_ARGS): ... this, and update for above changes. + (SC_AT_DIRECTIVE_SKIP_WS): Update. + (scan_skel): Move yylex_destroy to... + (skel_scanner_free): ... here. + * tests/skeletons.at (installed skeleton file name): Rename to... + (installed skeleton file names): ... this. + +2007-01-27 Joel E. Denny + + * ChangeLog: For changes in doc/bison.texinfo, consistently reference + node names: say "Table of Symbols" not "Bison Symbols", and say "Decl + Summary" not "Directives". + * doc/bison.texinfo (Decl Summary, Calc++ Parser): Cross-reference the + %code entry in "Decl Summary" rather than the one in "Table of Symbols" + since the former is now the more complete one. + (Prologue Alternatives): Likewise and do the same for %defines. + (Table of Symbols): Add summary of %code, add summary of %define, and + move full %code documentation to... + (Decl Summary): ... here for consistency with other entries in these + sections. + Move %define entry in order to keep this list alphabetized. + Reword %define entry a little to put less emphasis on the skeleton + concept, which most users shouldn't have to think about. + +2007-01-26 Paul Eggert + + Adjust to recent gnulib changes. + * lib/.cvsignore: Remove stpcpy.h, strndup.h, strnlen.h. + Add string.h, string_.h, unistd_.h, wchar_.h. + * m4/.cvsignore: Add gnulib-common.m4, string_h.m4, wchar.m4. + * src/system.h: Don't include ; this is now done by + . + +2007-01-23 Paolo Bonzini + + Simplify implementation of unqualified %code, implement macros for + uniform treatment of boolean %define flags. Document %define. + * data/bison.m4 (b4_percent_define_ifdef, b4_percent_define_flag_if, + b4_percent_code_ifdef): New. + (b4_percent_code_get): Map unqualified %code to b4_percent_code(). + * data/c++.m4: Define default value for global_tokens_and_yystype. + * data/glr.cc: Likewise. + * data/location.cc: Use b4_percent_define_flag_if. + + * doc/bison.texinfo (Decl Summary): Document %define. + + * src/parse-gram.y (Unqualified %code): Change muscle name to + b4_percent_code(). + (content.opt): Default to empty. + +2007-01-17 Joel E. Denny + + Implement support for relative and absolute skeleton file names. + Discussed starting at + . + * doc/bison.texinfo (Decl Summary): Document in %skeleton entry. + (Bison Options): Document in --skeleton entry. + * src/output.c (output_skeleton): Use strncpy rather than strcpy since + full_skeleton can't necessarily hold all of pkgdatadir. + If the specified skeleton file name contains a `/', don't prepend + pkgdatadir. + * src/parse-gram.y (prologue_declaration): If the specified skeleton + file name contains a `/', prepend the grammar file directory. + * tests/Makefile.am (TESTSUITE_AT): Add skeletons.at. + * skeletons.at: New file. + (relative skeleton file names): New test case. + (installed skeleton file names): New test case. + * tests/testsuite.at: Include skeletons.at. + + * bootstrap: Update copyright to 2007. + +2007-01-17 Paolo Bonzini + + * bootstrap: Remove occurrences of .#bootmp from the files. + +2007-01-17 Akim Demaille + + * doc/bison.texinfo (Calc++ Parser): Don't try to alias + nonterminals. + Use per-type %printer. + +2007-01-17 Joel E. Denny + + * NEWS, data/c++-skel.m4, data/c++.m4, data/c-skel.m4, data/c.m4, + data/glr.c, data/glr.cc, data/lalr1.cc, data/location.cc, + djgpp/config.site, src/files.c, src/files.h, src/main.c, + src/muscle_tab.c, src/muscle_tab.h, src/parse-gram.y, src/reader.h, + src/scan-skel.h, src/scan-skel.l, tests/actions.at, tests/calc.at, + tests/glr-regression.at, tests/input.at, tests/local.at, + tests/output.at, tests/torture.at: Update copyright to 2007. + +2007-01-16 Akim Demaille + + * doc/bison.texinfo (Calc++ Parsing Driver): Let "parse" return an + error code. + (Calc++ Scanner): Exit with failure if we can't open the input + file. + Accept "-" standing for stdin. + (Calc++ Top Level): Print the result only if the parsing was + successful. + +2007-01-16 Akim Demaille + + * data/lalr1.cc (yy_reduce_print_): Add a missing end-of-line. + +2007-01-15 Paolo Bonzini + and Joel E. Denny + + Clean up %define and %code implementation in M4 some. Most + importantly, rename all related macros to be in the b4_percent_define + and b4_percent_code namespaces. Also, complete support for `.' in + %define variable names and %code qualifiers. + * data/bison.m4 (b4_check_user_names): Check for special + "SKELETON-NAMESPACE(name)" macros instead of using two nested + m4_foreach loops. + (b4_get_percent_define, b4_get_percent_code): Rename to... + (b4_percent_define_get, b4_percent_code_get): ... these. + Extend documentation with examples. + For SKELETON-NAMESPACE (as documented for b4_check_user_names), use + b4_percent_define_skeleton_variables and + b4_percent_code_skeleton_qualifiers. + Expect any value for the %define variable `foo' to be stored in the + macro named `b4_percent_define(foo)'; expect any %code blocks for the + qualifier `foo' to be stored in a macro named `b4_percent_code(foo)'; + expect any unqualified %code blocks to be stored in a macro named + `b4_percent_code_unqualified'. + Use m4_indir so that %define variable names and %code qualifiers can + contain `.', which is allowed by the grammar parser. + (b4_percent_define_default): New macro to set a default value for a + %define variable. + (m4_wrap): Update wrapped code, and fix some underquoting. + (b4_check_user_names_wrap): Update and define outside the m4_wrap. + Expect grammar uses of %define variables and %code qualifiers to be + defined in b4_percent_define_user_variables and + b4_percent_code_user_qualifiers. + * data/c++.m4: Use b4_percent_define_default rather than + m4_define_default. Fix some underquoting. Skeleton usage of %define + variable define_location_comparison now implies skeleton usage of + %define variable filename_type. + * data/glr.c, data/glr.cc, data/lalr1.cc, data/location.cc, + data/push.c, data/yacc.c: Update macro names. + * src/parse-gram.y (prologue_declaration, grammar_declaration): Update + muscle names. + +2007-01-14 Juan Manuel Guerrero + + DJGPP specific issues. + + * djgpp/config.site: Set ac_cv_path_mkdir to a sane DJGPP specific + default. Set gl_cv_absolute_wctype_h to a sane DJGPP specific default. + +2007-01-09 Joel E. Denny + + * tests/glr-regression.at: Use AT_PARSER_CHECK rather than AT_CHECK to + run parsers in all tests so that Valgrind is invoked during + maintainer-check-valgrind. + (Duplicate representation of merged trees): Free all semantic values. + (Duplicated user destructor for lookahead): Likewise. + +2007-01-09 Joel E. Denny + + * tests/local.at (AT_PARSER_CHECK): Add a PRE argument to specify a + command-line prefix. + * tests/torture.at (Exploding the Stack Size with Alloca): Stderr is + ignored, so use that PRE to set --log-fd=1 in VALGRIND_OPTS so we don't + miss Valgrind messages. + (Exploding the Stack Size with Malloc): Likewise. + +2007-01-09 Joel E. Denny + + Ignore YYSTACK_USE_ALLOCA for push parsers since the stacks can't be + locals. Reported by Juan Manuel Guerrero at + . + * data/push.c: Enclose the #ifdef YYSTACK_USE_ALLOCA in b4_push_if. + Fix some indentation also. + * tests/torture.at (Exploding the Stack Size with Alloca): Add comment + explaining this issue. + +2007-01-09 Paolo Bonzini + and Joel E. Denny + + Simplify union and prologue handling, and escape union and lex/parse + params with digraphs. + * data/bison.m4 (b4_pre_prologue, b4_post_prologue): Set their default + values to the empty string since these are no longer guaranteed + initialized by the front-end. + * data/glr.c, data/glr.cc, data/lalr1.cc, data/push.c, data/yacc.c: Add + braces around b4_user_stype since this is no longer done by the + front-end. + * src/files.c, src/files.h (pre_prologue_obstack, + post_prologue_obstack): Remove. + * src/muscle_tab.c (muscle_pair_list_grow): Don't duplicate header + comments here. Use MUSCLE_OBSTACK_SGROW so that values are escaped + with digraphs. This fixes lex params and parse params. + * src/muscle_tab.h (muscle_pair_list_grow): Update comments. + * src/output.c (prepare): Remove muscle insertion of the prologues. + (output): Remove freeing of pre_prologue_obstack and + post_prologue_obstack. + * src/parse-gram.y (prologue_declaration): Use muscle_code_grow rather + than prologue_augment for prologue parsing so you don't need prologue + obstacks. + (grammar_declaration): For %union RHS, use `braceless' instead of + "{...}" so that braces are already stripped and code is escaped with + digraphs. + * src/reader.c (prologue_augment): Remove. + (reader): Remove initialization of pre_prologue_obstack and + post_prologue_obstack. + * src/reader.h (prologue_augment): Remove. + + * data/c.m4: Remove stray parenthesis. + +2007-01-08 Joel E. Denny + + Remove quotes from variables names in %define directives and from + qualifiers in %code directives, and restrict the characters that are + allowed in them to M4-friendly ones. For %define, continue to support + the quoted form as a deprecated feature. Discussed starting at + . + * NEWS (2.3a+): Add entry for the change to %define. Update entry for + %code. + * doc/bison.texinfo (Prologue Alternatives): Update. + (Bison Declaration Summary): In %defines entry, update mention of + `%code requires' and `%code provides'. + (C++ Location Values): Update %define uses. + (Calc++ Parser Interface): Likewise. + (Calc++ Parser): Likewise, and update `%code requires' uses. + (Table of Symbols): Update %code documentation. + * src/parse-gram.y (prologue_declaration): For %define variables, use + `variable' instead of `STRING'. + (grammar_declaration): For %code qualifiers, use `ID' instead of + `STRING'. + (variable): New nonterminal that takes an `ID' or a `STRING'. + * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Update %code + and %define uses. + * tests/calc.at (_AT_DATA_CALC_Y): Update %define use. + * tests/input.at (Reject unused %code qualifiers): Update %code uses. + (%define errors): Update %define uses. + +2007-01-08 Joel E. Denny + + * src/parse-gram.y (prologue_declaration): Use MUSCLE_INSERT_STRING + instead of muscle_insert for %define values so that M4-special + characters are replaced with digraphs. + * tests/input.at (%define errors): Extend to check weird values. + +2007-01-08 Joel E. Denny + + Instead of having skeletons declare all valid %define variables and + %code qualifiers, provide macros that retrieve the associated values + and build these lists automatically. Thus Bison will now warn when a + variable or qualifier is not used by the skeleton in the current + invocation regardless of whether it might sometimes be used by that + skeleton in other invocations. Also, move all %define value macros to + the b4_percent_define_ namespace, and remove the %define "NAME" {CODE} + form, which is replaced by %code. + * data/bison.m4 (b4_check_for_unrecognized_names): Rename to... + (b4_check_user_names): ... this, and change the series of valid name + arguments to a single list argument for names used in the skeleton + similar to the existing list argument for names used in the grammar. + Warn instead of complaining. + (b4_get_percent_define, b4_get_percent_code): New to retrieve %define + values and %code code, to format %code code properly, and to build + lists of all %define variables and %code qualifiers used in the + skeleton: b4_skeleton_percent_define_variables and + b4_skeleton_percent_code_qualifiers. + (b4_check_percent_define_variables, b4_check_percent_code_qualifiers): + Remove, and... + (m4_wrap): ... m4_wrap b4_check_user_names invocations instead so that + the skeleton names lists can finish building first. In place of + b4_used_percent_define_variables and b4_used_percent_code_qualifiers, + expect the lists b4_user_percent_define_variables and + b4_user_percent_code_qualifiers. + * data/c++.m4: Where setting default values for b4_parser_class_name, + b4_location_type, b4_filename_type, b4_namespace, and + b4_define_location_comparison, update their names to the + b4_percent_define_ namespace. + * data/glr.c: Don't use b4_check_percent_define_variables and + b4_check_percent_code_qualifiers. Use b4_get_percent_code. + * data/glr.cc, data/lalr1.cc: Likewise, and use b4_get_percent_define. + (b4_parser_class_name, b4_namespace): Define these using + b4_get_percent_define for parser_class_name and namespace. + * data/location.cc: Use b4_get_percent_define. + * data/push.c: Don't use b4_check_percent_define_variables and + b4_check_percent_code_qualifiers. Use b4_get_percent_code. + * data/yacc.c: Likewise, and don't call m4_exit in + b4_use_push_for_pull_if or m4_wrap code will never execute. + * src/muscle_tab.c, src/muscle_tab.h (muscle_grow_used_name_list): + Rename to... + (muscle_grow_user_name_list): ... this for consistency with the + terminology used in bison.m4. + * src/parse-gram.y (prologue_declaration): Prepend "percent_define_" to + %define variable names, and rename muscle used_percent_define_variables + to user_percent_define_variables. + (grammar_declaration): Rename muscle used_percent_code_qualifiers to + user_percent_code_qualifiers. + (content): Remove. + (content.opt): Replace content RHS with STRING RHS so %define "NAME" + {CODE} form is no longer accepted. + * tests/input.at (Reject bad %code qualifiers): Rename to... + (Reject unused %code qualifiers): ... this, and update test output. + (%define error): Update test output. + +2007-01-07 Joel E. Denny + + Check for unrecognized %define variables similar to checking for + unrecognized %code qualifiers. Check for redefined %define variables. + * data/bison.m4 (b4_check_for_unrecognized_names): New macro that + generalizes... + (b4_check_percent_code_qualifiers): ... this, which now wraps it. + (b4_check_percent_define_variables): New, also wraps it. + * data/glr.c: Unless glr.cc is wrapping glr.c, declare no valid %define + variables using b4_check_percent_define_variables. + * data/glr.cc, data/lalr1.cc: Declare the valid %define variables as + all those exercised in the test suite and all those listed in the + `Default values' section of c++.m4. Are there others? + * data/push.c, data/yacc.c: Declare no valid %define variables. + * src/muscle_tab.c, src/muscle_tab.h (muscle_find_const): New function, + similar to muscle_find, but it works even when the muscle stores a + const value. + (muscle_grow_used_name_list): New function for constructing the used + name list muscles that b4_check_for_unrecognized_names requires. + * src/parse-gram.y (prologue_declaration): Warn if a variable is + %define'd more than once. Define the b4_used_percent_define_variables + muscle with muscle_grow_used_name_list. + (grammar_declaration): Abbreviate %code code with + muscle_grow_used_name_list. + * tests/input.at (%define errors): New. + +2007-01-06 Joel E. Denny + + Provide warn_at, complain_at, and fatal_at function callbacks to the + skeletons, and use this for %code qualifier complaints. + * data/bison.m4 (b4_error_at): New, invoked by... + (b4_warn_at, b4_complain_at, b4_fatal_at): ... these new macros to wrap + the skeleton scanner's new @warn_at(...@), @complain_at(...@), and + @fatal_at(...@) directives. + (b4_check_percent_code_qualifiers): Rewrite to expect locations for + qualifiers in b4_used_percent_code_qualifiers and to use + b4_complain_at. + * src/location.c, src/location.h (boundary_set_from_string): New global + function. + * src/muscle_tab.c, src/muscle_tab.h (muscle_boundary_grow): New global + function. + * src/parse-gram.y (grammar_declaration): Add locations for qualifiers + to b4_used_percent_code_qualifiers. + * src/scan-skel.l (fail_for_at_directive_too_few_args): New static + function. + (AT_DIRECTIVE_ARGC_MAX): Increase for boundary arguments. + (lineno): Rename to... + (out_lineno): ... this so I don't misunderstand it again. + (SC_AT_DIRECTIVE_SKIP_WS): Don't increment out_lineno for newlines + here; these newlines are in the input but not the output file. + (SC_AT_DIRECTIVE_ARG): Likewise. Extract directive execution to... + (at_directive_perform): ... this new static function, and add handling + of new @warn_at(...@), @complain_at(...@), and @fatal_at(...@) + directives. + * tests/input.at (Reject bad %code qualifiers): Update test output with + locations and extend. + + * tests/output.at (Output file name: [, Output file name: ]): Remove + bogus comment about these tests failing. + +2007-01-06 Joel E. Denny + + Clean up b4_check_percent_code_qualifiers a little. + * data/bison.m4 (b4_check_percent_code_qualifiers): Expect qualifiers + in b4_used_percent_code_qualifiers to be double-M4-quoted. Rewrite + documentation and add examples. + * src/parse-gram.y (grammar_declaration): Double-M4-quote those + qualifiers here. + +2007-01-05 Joel E. Denny + + Don't use m4_divert since it makes m4_divert_push and m4_divert_pop + unreliable -- especially when they're hidden inside another macro. + * data/bison.m4, data/c++-skel.m4, data/c++.m4, data/c-skel.m4, + data/c.m4: Remove m4_divert(-1). + * data/glr.c, data/glr.cc, data/lalr1.cc, data/location.cc, + data/push.c, data/yacc.c: Likewise, and replace m4_divert(0) with + m4_divert_push(0) and m4_divert_pop(0). + * src/output.c (output_skeleton): Don't add an m4_divert_push(0) and + an m4_wrap([m4_divert_pop(0)]) to the M4. Diversion -1, which is + pushed and popped by m4sugar, should be first on the stack. + + Provide warn, complain, and fatal function callbacks to the skeletons. + This provides more flexibility than m4_fatal, improves the error + message format, and captures messages for translation. Discussed + starting at + . + * data/bison.m4 (b4_error): New, invoked by... + (b4_warn, b4_complain, b4_fatal): ... these new macros to wrap the + skeleton scanner's new @warn(...@), @complain(...@), and @fatal(...@) + directives. Because these M4 macros might be called when the current + diversion is -1 or 0, m4_divert_push and m4_divert_pop is used; thus + the previous removal of uses of m4_divert, which caused trouble. + (b4_check_percent_code_qualifiers): Use b4_complain instead of + m4_fatal to report unrecognized %code qualifiers. + * data/c++-skel.m4: Use b4_complain instead of m4_fatal to report C++ + push parser requests. + * data/glr.c: Use b4_complain instead of m4_fatal to report + non-deterministic push parser requests. + Update @output usage to @output(...@) form. + * data/glr.cc, data/lalr1.cc: Use b4_fatal instead of m4_fatal to + report missing %defines. Update @output usage to @output(...@) form. + * data/location.cc, data/push.c, data/yacc.c: Update @output usage to + @output(...@) form. + * src/main.c (main): Invoke skel_scanner_free. + * src/scan-skel.h (skel_scanner_free): Prototype new function. + * src/scan-skel.l (FLEX_NO_OBSTACK): Don't define; we now need the + obstack_for_string from flex-scanner.h. + (YY_DECL): Use to declare skel_lex static. + (decode_at_digraphs): Remove; now handled in the new + SC_AT_DIRECTIVE_ARG start condition. + (fail_for_at_directive_too_many_args, fail_for_invalid_at): New static + functions. + (at_directive_name, AT_DIRECTIVE_ARGC_MAX, at_directive_argc, + at_directive_argv): New static globals. + (INITIAL): Use fail_for_invalid_at. + Don't parse `@output file_name\n' or `@basename(...@)'. Instead, + recognize the start of a generalized `@directive(...@)' form and + start... + (SC_AT_DIRECTIVE_ARG): ... this new start condition to parse the + directive args (using the new obstack_for_string), to decode the + contained @ diagraphs, and to perform the directive. It recognizes + @basename(...@), @warn(...@), @complain(...@), @fatal(...@), and + @output(...@). + (SC_AT_DIRECTIVE_SKIP_WS): New start condition started by + SC_AT_DIRECTIVE_ARG to skip whitespace after the argument delimiter, + `@,'. + (scan_skel): Initialize obstack_for_string on the first call. + (skel_scanner_free): New function to free obstack_for_string. + * tests/input.at (Reject bad %code qualifiers): Update test output. + +2007-01-04 Joel E. Denny + + Consolidate the 4 prologue alternative directives (%code, %requires, + %provides, and %code-top) into a single %code directive with an + optional qualifier field. Discussed at + . + * NEWS (2.3a+): Rewrite the existing entry for the prologue + alternatives. + * doc/bison.texinfo (Prologue Alternatives): Update. + (Decl Summary): Update to %code "requires" and %code "provides". + (Calc++ Parser): Update to %code "requires". + (Table of Symbols): Remove entries for %requires, %provides, and + %code-top. Rewrite %code entry, and add a %code "QUALIFIER" entry. + * data/bison.m4 (b4_user_provides, b4_user_requires): Remove as these + are replaced by b4_percent_code_provides and b4_percent_code_requires, + which are skeleton-specific. + (b4_check_percent_code_qualifiers): New. A skeleton can use this to + declare what %code qualifiers it supports and to complain if any other + qualifiers were used in the grammar. + * data/glr.cc: Update to use b4_user_code([b4_percent_code_requires]) + and b4_user_code([b4_percent_code_provides]) in place of + b4_user_requires and b4_user_provides. + * data/glr.c, data/lalr1.cc, data/push.c, data/yacc.c: Likewise. + Add b4_user_code([b4_percent_code_top]) and + b4_user_code([b4_percent_code]). + Invoke b4_check_percent_code_qualifiers. + * src/parse-gram.y (PERCENT_CODE_TOP, PERCENT_PROVIDES, + PERCENT_REQUIRES): Remove. + (grammar_declaration): Remove RHS's for %code-top, %provides, and + %requires. Rewrite the %code RHS as the unqualified form defining the + muscle b4_percent_code. Add another RHS for the qualified %code form, + which defines muscles of the form b4_percent_code_QUALIFIER and the + b4_used_percent_code_qualifiers muscle. + * src/scan-gram.l (PERCENT_CODE_TOP, PERCENT_PROVIDES, + PERCENT_REQUIRES): Remove. + * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Update to use + %code "requires" and %code "provides". + * tests/input.at (Reject bad %code qualifiers): New. + +2007-01-03 Joel E. Denny + + Use the new code_props interface for destructors and printers. + * src/symtab.h (symbol, semantic_type): Remove destructor_location and + printer_location members, and change the type of the destructor and + printer members to code_props. + (symbol_destructor_set, symbol_destructor_get, symbol_printer_set, + symbol_printer_get, semantic_type_destructor_set, + semantic_type_printer_set, default_tagged_destructor_set, + default_tagless_destructor_set, default_tagged_printer_set, + default_tagless_printer_set): Use code_props in arguments and return + types in place of char const * and location. + (symbol_destructor_location_get, symbol_printer_location_get): Remove + since the locations are now contained in the return of + symbol_destructor_get and symbol_printer_get. + * src/output.c (symbol_destructors_output, symbol_printers_output): + Replace with... + (symbol_code_props_output): ... this to eliminate duplicate code. + (output_skeleton): Update to use symbol_code_props_output. + * src/reader.c (symbol_should_be_used): Update use of + symbol_destructor_get. + * src/symlist.c (symbol_list_destructor_set, symbol_list_printer_set): + Update uses of the various _destructor_set and _printer_set functions. + * src/symtab.c: (default_tagged_destructor_location, + default_tagless_destructor_location, default_tagged_printer_location, + default_tagless_printer_location): Remove since we... + (default_tagged_destructor, default_tagless_destructor, + default_tagged_printer, default_tagless_printer): ... change the type + of these to code_props. + (symbol_new, semantic_type_new, symbol_destructor_set, + semantic_type_destructor_set, symbol_destructor_get, + symbol_printer_set, semantic_type_printer_set, symbol_printer_get, + symbol_check_alias_consistency, default_tagged_destructor_set, + default_tagless_destructor_set, default_tagged_printer_set, + default_tagless_printer_set): Update. + (symbol_destructor_location_get, symbol_printer_location_get): Remove. + (SYMBOL_CODE_PRINT): New similar to SYMBOL_ATTR_PRINT but for + code_props members. + (symbol_print): Use SYMBOL_CODE_PRINT. + +2007-01-03 Joel E. Denny + + Use the new code_props interface for rule actions. + * src/symlist.h (symbol_list): Replace action, action_location, and + used members with a code_props action_props member. + * src/reader.c (symbol_should_be_used, grammar_rule_check, + grammar_midrule_action, grammar_current_rule_merge_set, + grammar_current_rule_symbol_append, packgram): Update. + * src/scan-code.h (translate_rule_action): Remove, no longer used. + * src/scan-code.l (handle_action_dollar): Update. + (translate_rule_action): Remove, no longer used. + * src/symlist.c (symbol_list_sym_new, symbol_list_syms_print): Update. + +2007-01-02 Joel E. Denny + + Use the new code_props interface in parse-gram.y. + * src/parse-gram.y (prologue_declaration, braceless, epilogue.opt): + Update all uses of translate_* functions to use the new code_props + interface and to use gram_scanner_last_string_free and + code_scanner_last_string_free where possible. + (grammar_declaration): symbol_list_destructor_set and + symbol_list_printer_set now perform the translation, so don't do it + here. Use gram_scanner_last_string_free where possible. + * src/scan-code.h, src/scan-code.l (translate_symbol_action, + translate_code): Remove, no longer used. + * src/symlist.h, src/symlist.c (symbol_list_destructor_set, + symbol_list_printer_set): Perform code translation here rather than + depending on the caller to do so. + + * src/symlist.h (struct symbol_list): Correct some documentation typos. + * src/scan-gram.h (gram_last_string): Remove declaration. + * src/scan-gram.l (last_string): Declare it static. + +2007-01-02 Joel E. Denny + + Encapsulate code properties and related functionality for the various + destructors, printers, and actions into a code_props structure and + interface. This patch merely implements code_props in scan-code.h and + scan-code.l. Future patches will rewrite other modules to use it. + Discussed starting at + . + * src/location.h (EMPTY_LOCATION_INIT): Define so that it's easier to + consistently initialize const structs that have an empty location + field. + * src/location.c (empty_location): Initialize with EMPTY_LOCATION_INIT + to ensure consistency. + * src/scan-code.h (code_props): New structure. + (code_props_none_init, CODE_PROPS_NONE_INIT, code_props_none): New + function, macro, and const global variable for initializing a + code_props with no code. + (code_props_plain_init, code_props_symbol_action_init, + code_props_rule_action_init, code_props_translate_code): The rest of + the new code_props functional interface. Among other things, the init + functions set the code_props kind field so that + code_props_translate_code will know whether to behave like + translate_symbol_action, translate_rule_action, or translate_code. + These old translate functions must remain until all other modules are + updated to use the new code_props interface. + (code_scanner_last_string_free): New function similar to + gram_scanner_last_string_free. + (code_scanner_free): Add documentation. + * src/scan-code.l: Implement the new interface. + (code_lex): Make it static, add a code_props* argument, and remove the + rule argument. + (last_string): New static global similar to the one in scan-gram.l. + (SC_RULE_ACTION): Update to use the code_props* argument to code_lex + instead of rule. + (SC_SYMBOL_ACTION): For $$, set the is_value_used member of the + code_props since Bison may one day use this information for destructors + and printers. + (<*><>): Use STRING_FINISH so that last_string is set. + (handle_action_dollar): Use symbol_list_n_get and set used flag + directly since symbol_list_n_used_set is removed. + (translate_action): Add a code_props* argument and remove the rule, + action, and location arguments. Pass the code_props* on to code_lex. + (translate_rule_action, translate_symbol_action, translate_code): + Rewrite as wrappers around the new code_props interface. + * src/symlist.h, src/symlist.c (symbol_list_n_used_set): Remove since + it would eventually need to break the encapsulation of code_props. + +2007-01-01 Joel E. Denny + + * etc/.cvsignore: New. + 2007-01-01 Joel E. Denny Add maintainer-push-check to run maintainer-check using push parsing in @@ -259,7 +1210,7 @@ documentation instead. (Calc++ Parser): Use `%require "@value{VERSION}"' rather than `%require "2.3b"' so that the example is always up-to-date. - (Bison Symbols): Add entries for %language and %skeleton. + (Table of Symbols): Add entries for %language and %skeleton. * examples/extexi (normalize): Instead of replacing every %require argument with the current Bison version, just substitute for `@value{VERSION}'. This guarantees that we're testing what actually @@ -294,7 +1245,7 @@ * doc/bison.texinfo (C++ Parser Interface): Prefer %language over %skeleton. - (Directives): Document %language and %skeleton. + (Decl Summary): Document %language and %skeleton. (Command line): Document -L. * examples/extexi: Rewrite %require directive. @@ -495,7 +1446,7 @@ (2.3a): Annotate this entry to say the old forms of these features were also experimental. * doc/bison.texinfo (Prologue Alternatives, Freeing Discarded Symbols, - Bison Symbols): Say they're experimental. Comment out any mention + Table of Symbols): Say they're experimental. Comment out any mention of Java (we'll want this back eventually). 2006-12-01 Joel E. Denny @@ -504,7 +1455,7 @@ %file-prefix, %name-prefix, and %output. Discussed at . * NEWS (2.3a+): Mention. - * doc/bison.texinfo (Decl Summary, Bison Symbols): Add entry for new + * doc/bison.texinfo (Decl Summary, Table of Symbols): Add entry for new form of %defines, and remove `=' from entries for %file-prefix, %name-prefix, and %output. * src/parse-gram.y (prologue_declaration): Implement. @@ -534,7 +1485,7 @@ Rename to <>. Discussed starting at . * NEWS (2.3a+): Update. - * doc/bison.texinfo (Freeing Discarded Symbols, Bison Symbols): + * doc/bison.texinfo (Freeing Discarded Symbols, Table of Symbols): Update. * src/parse-gram.y (TYPE_TAG_NONE, generic_symlist_item): Implement. * src/scan-gram.l (INITIAL): Implement. @@ -710,7 +1661,7 @@ * NEWS (2.3a+): Mention. * doc/bison.texinfo (Freeing Discarded Symbols): Document this and the previous change today related to mid-rules. - (Bison Symbols): Remove %symbol-default and add <*> and . + (Table of Symbols): Remove %symbol-default and add <*> and . * src/parse-gram.y (PERCENT_SYMBOL_DEFAULT): Remove. (TYPE_TAG_ANY): Add as <*>. (TYPE_TAG_NONE): Add as . @@ -803,8 +1754,8 @@ alternatives to... (Prologue Alternatives): ... this new section, and extend it to discuss all 4 directives in detail. - (Bison Symbols): Clean up discussion of prologue alternatives and add - %code-top. + (Table of Symbols): Clean up discussion of prologue alternatives and + add %code-top. 2006-10-16 Juan Manuel Guerrero @@ -1260,7 +2211,7 @@ . * NEWS (2.3+): Add %symbol-default to example. * bison.texinfo (Freeing Discarded Symbols): Likewise. - (Bison Symbols): Add entry for %symbol-default. + (Table of Symbols): Add entry for %symbol-default. * src/parse-gram.y (PERCENT_SYMBOL_DEFAULT): New token. (generic_symlist, generic_symlist_item): New nonterminals for creating a list in which each item is a symbol, semantic type, or @@ -1902,7 +2853,7 @@ prologue blocks with %*-header declarations. (Calc++ Parser): Likewise. (Bison Declaration Summary): Update names. - (Bison Symbols): Update description. + (Table of Symbols): Update description. * src/parse-gram.y (PERCENT_AFTER_DEFINITIONS): Update to... (PERCENT_END_HEADER): ... this. (PERCENT_BEFORE_DEFINITIONS): Update to... @@ -1983,7 +2934,7 @@ file. (Calc++ Parser): Forward declare driver in a %before-definitions rather than in the pre-prologue so that make check succeeds. - (Bison Symbols): Add entries for %before-definitions and + (Table of Symbols): Add entries for %before-definitions and %after-definitions. * src/parse-gram.y (PERCENT_BEFORE_DEFINITIONS): New token for %before-definitions. @@ -3073,7 +4024,7 @@ in the yychar entry. In the yychar entry, remove mention of the local yychar case (pure parser) since this is irrelevant information when writing semantic - actions and since it's already discussed in `Bison Symbols' where + actions and since it's already discussed in `Table of Symbols' where yychar is otherwise described as an external variable. In the yychar entry, don't call it the `current' look-ahead since it isn't when semantic actions are deferred. @@ -3084,7 +4035,7 @@ `current' look-ahead, and do mention yylval and yylloc. (Error Recovery): Cross-reference `Action Features' when mentioning yyclearin. - (Bison Symbols): In the yychar entry, don't call it the `current' + (Table of Symbols): In the yychar entry, don't call it the `current' look-ahead. In the yylloc and yylval entries, mention look-ahead usage. @@ -18316,8 +19267,8 @@ ----- Copyright (C) 1987, 1988, 1991, 1992, 1993, 1994, 1995, 1996, - 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free - Software Foundation, Inc. + 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 + Free Software Foundation, Inc. Copying and distribution of this file, with or without modification, are permitted provided the copyright notice and this