changelog

bison源代码.bison 是替代yacc的语法分析程序生成器. yacc是 Yet Another Compiler Compiler的缩写. bison又是什么呐 是一个生成可以分析文本文件结构

Sat May 11 15:11:15 1996  Richard Stallman  <[e-mail]>

	* Version 1.25 released.

	* Makefile.in (dist): Don't use $(srcdir).

	* bison.simple (__yy_memcpy): Really reorder the args, as was
	supposedly done on Feb 14 1995.
	(yyparse): Calls changed accordingly.

Wed Jan 24 22:56:29 1996  Richard Stallman  <[e-mail]>

	* output.c (output_rule_data): Test YYERROR_VERBOSE in the conditional
	around the definition of ttyname.

Thu Dec 28 23:27:32 1995  Richard Stallman  <[e-mail]>

	* bison.simple: Fix line numbers in #line commands.

Sun Dec 24 16:59:44 1995  Richard Stallman  <[e-mail]>

	* bison.simple (YYPARSE_PARAM_DECL): In C++, make it always null.
	(YYPARSE_PARAM_ARG): New macro.
	(yyparse): Use YYPARSE_PARAM_ARG.

Sun Oct 15 12:44:09 1995  Richard Stallman  <[e-mail]>

	* version.c: Version now 1.25.

	* main.c (warn): Set `failure'.

Tue Aug  1 12:30:38 EDT 1995   Wilfred J. Hansen  <[e-mail]>

	* bison.cld, getargs.c, vmsgetargs.c: Added -n, -k, and -raw switches.
	(noparserflag, toknumflag, rawtoknumflag): New variables.
	
	* conflicts.c (resolve_sr_conflict): Remove use of alloca.

	* files.c (openfiles, open_extra_files, done):  Add faction flag 
	and actfile file.  Handle noparserflag.  Both for -n switch.

	* lex.c: Include getopt.h.  Add some extern decls.
	(safegetc): New function to deal with EOF gracefully.  
	(literalchar); new function to deal with reading \ escapes.
	(lex): Use literalchar.
	(lex): Implemented "..." tokens.
	(literalchar, lex, parse_percent_token): Made tokenbuffer 
	always contain the token.  This includes growing the token 
	buffer while reading an integer.
	(parse_percent_token): Replaced if-else statement with percent_table.
	(parse_percent_token): Added % declarations as another  
	way to specify the flags -n, -l, and -r.  Also added hooks for 
	-d, -k, -y, -v, -t, -p, -b, -o, but implementation requires
	major changes to files.c.
	(lex) Retain in the incoming stream a character following 
	an incorrect '/'.
	(skip_white_space, lex):  Revised most error messages 
	and changed fatal to warn to avoid aborting.
	(percent_table):  Added %thong declarations.

	* lex.h: Added THONG and NOOP for alias processing.
	Added SETOPT for the new code that allows setting options with %flags.

	* main.c (main):  If reader sees an error, don't process the grammar.
	(fatals): Updated to not use VARARGS1.
	(printable_version, int_to_string, warn, warni, warns, warnss)
	(warnsss): New error reporting functions.  Avoid abort for error.

	* output.c (output_headers, output_trailers, output, output_gram)
	(output_rule_data): Implement noparserflag variable.
	Implement toknumflag variable.
	(output): Call reader_output_yylsp to output LTYPESTR.

	* reader.c (reader_output_yylsp): New function.
	(readgram): Use `#if 0' around code that accepted %command 
	inside grammar rules:  The documentation doesn't allow it, 
	and it will fail since the %command processors scan for the next %.
	(parse_token_decl):  Extended the %token 
	declaration to allow a multi-character symbol as an alias.
	(parse_thong_decl): New function.
	(read_declarations): Added %thong declarations.
	(read_declarations): Handle NOOP to deal with allowing
	% declarations as another means to specify the flags.
	(readgram): Allow %prec prior to semantics embedded in a rule.
	(skip_to_char, read_declarations, copy_definition)
	(parse_token_decl, parse_start_decl, parse_type_decl)
	(parse_assoc_decl, parse_union_decl, parse_expect_decl)
	(get_type_name, copy_guard, copy_action, readgram)
	(get_type, packsymbols):  Revised most error messages.
	Changed `fatal' to `warnxxx' to avoid aborting for error.
	Revised and use multiple warnxxx functions to avoid using VARARGS1.
	(read_declarations): Improve the error message for 
	an invalid character.  Do not abort.
	(read_declarations, copy_guard, copy_action): Use 
	printable_version to avoid unprintable characters in printed output.
	(parse_expect_decl): Error if argument to %expect exceeds 10 digits.
	(parse_token_decl, parse_assoc_decl, parse_type_decl, get_type):  
	Allow the type of a non-terminal can be given
	more than once, as long as all specifications give the same type.

	* reduce.c (reduce_grammar): Revise an error message.
	(print_notices): Remove final `.' from error message.

	* symtab.h (SALIAS): New #define for adding aliases to %token.
	(struct bucket): Added `alias' field.

Wed May  3 03:12:28 1995  Richard Stallman  <[e-mail]>

	* bison.simple: Change distribution terms.

	* version.c: Version now 1.23.  No, 1.24.

Thu Feb 23 02:43:21 1995  Richard Stallman  <[e-mail]>

	* files.c: Test __VMS_POSIX as well as VMS.

Tue Feb 14 11:53:05 1995  Jim Meyering ([e-mail])

	* bison.simple (__yy_memcpy): Renamed from __yy_bcopy to avoid
	confusion.  Reverse FROM and TO arguments to be consistent with
	those of memcpy.

Thu Nov 10 16:33:41 1994  David J. MacKenzie  <[e-mail]>

	* Makefile.in (DISTFILES): Include install-sh, not install.sh.
	Include NEWS.

	* configure.in: Update to Autoconf v2 macro names.

Tue Oct  4 22:25:43 1994  David J. MacKenzie  ([e-mail])

	* Makefile.in (prefix, exec_prefix): Let configure set them.

Wed Sep 28 09:55:28 1994  David J. MacKenzie  ([e-mail])

	* Makefile.in: Set datadir to $(prefix)/share.

Tue Jul 12 16:42:43 1994  Richard Stallman  ([e-mail])

	* reader.c (reader): Rename undefined-token token to `$undefined.'.

Thu May  5 14:41:02 1994  David J. MacKenzie  ([e-mail])

	* Makefile.in (DISTFILES): Add install.sh.
	(install): Remove chmod commands.

Sat Mar 26 15:33:07 1994  Richard Stallman  ([e-mail])

	* bison.simple: Fix #line commands.

Thu Mar 24 23:09:07 1994  Richard Stallman  ([e-mail])

	* conflicts.c (print_reductions): Increment both fp1 and fp2
	while printing reductions in multi-rule case.

Sun Jan  2 15:51:52 1994  Richard Stallman  ([e-mail])

	* Makefile.in (LDFLAGS): Make it empty by default.
	(bison): Use CFLAGS.

Sun Nov 21 05:24:30 1993  Richard Stallman  ([e-mail])

	* bison.simple (YYLEX): Take notice of YYLEX_PARAM.

Mon Oct 18 23:52:33 1993  Richard Stallman  ([e-mail])

	* bison.simple (YYPARSE_PARAM_DECL): Always define this.

Thu Oct 14 12:19:13 1993  Richard Stallman  ([e-mail])

	* bison.simple (yyparse): Support YYPARSE_PARAM.

Mon Sep 13 18:17:14 1993  Noah Friedman  ([e-mail])

        * Makefile.in (check): New target.

Fri Sep 10 08:10:18 1993  Richard Stallman  ([e-mail])

	* conflicts.c (alloca): #undef before defining.

	* system.h (bcopy): Don't define if already defined.

Mon Sep  6 15:32:32 1993  Noah Friedman  ([e-mail])

        * Version 1.22 released.

        * mkinstalldirs: New file.

        * Makefile.in (dist): Use .gz for extension, not .z. 
        (DISTFILES): New variable.
        (dist): Use it instead of explicit file list. 
        Try to link each file separately, then copy file if ln fails.
        (installdirs): Use mkinstalldirs script.

Thu Jul 29 20:35:02 1993  David J. MacKenzie  ([e-mail])

	* Makefile.in (config.status): Run config.status --recheck, not
	configure, to get the right args passed.

Sat Jul 24 04:00:52 1993  Richard Stallman  ([e-mail])

	* bison.simple (yyparse): Init yychar1 to avoid warning.

Sun Jul  4 16:05:58 1993  Richard Stallman  ([e-mail])

	* bison.simple (yyparse): Don't set yyval when yylen is 0.

Sat Jun 26 15:54:04 1993  David J. MacKenzie  ([e-mail])

	* getargs.c (getargs): Exit after printing the version number.
	Add --help and -h options.
	(usage): New function.

Fri Jun 25 15:11:25 1993  Richard Stallman  ([e-mail])

	* getargs.c (longopts): Allow `output' as an alternative.

Wed Jun 16 17:02:37 1993  Richard Stallman  ([e-mail])

	* bison.simple (yyparse): Conditionalize the entire call to yyoverflow,
	not just two arguments in it.

Thu Jun  3 13:07:19 1993  Richard Stallman  ([e-mail])

	* bison.simple [__hpux] (alloca): Don't specify arg types.

Fri May  7 05:53:17 1993  Noah Friedman  ([e-mail])

        * Makefile.in (install): Depend on `uninstall' and `installdirs'.
	(installdirs): New target. 

Wed Apr 28 15:15:15 1993  Noah Friedman  ([e-mail])

        * reader.c:  Remove declaration of atoi. 

Fri Apr 23 12:29:20 1993  Noah Friedman  ([e-mail])

        * new.h [!__STDC__] (FREE): Check x != 0.
        Make expr to call `free' evaluate to 0.

Tue Apr 20 01:43:44 1993  David J. MacKenzie  ([e-mail])

	* files.c [MSDOS]: Use xmalloc, not malloc.
	* allocate.c (xmalloc): Renamed from mallocate.  Remove old wrapper.
	* conflicts.c, symtab.c, files.c, LR0.c, new.h: Change callers.
	* allocate.c (xrealloc): New function.
	* new.h: Declare it.
	* lex.c, reader.c: Use it.

Sun Apr 18 00:45:56 1993  Noah Friedman  ([e-mail])

        * Version 1.21 released.

        * reader.c : Don't declare `realloc'.

        * Makefile.in (bison.s1): use `rm -f' since it's quieter.
        (dist): make gzipped tar file.

Fri Apr 16 21:24:10 1993  Noah Friedman  ([e-mail])

        * Makefile.in (Makefile, config.status, configure): New targets.

Thu Apr 15 15:37:28 1993  Richard Stallman  ([e-mail])

	* main.c: Don't declare `abort'.

	* files.c: Don't declare `exit'.

Thu Apr 15 02:42:38 1993  Noah Friedman  ([e-mail])

        * configure.in: Add AC_CONST.

Wed Apr 14 00:51:17 1993  Richard Stallman  ([e-mail])

	* Makefile.in (all): Depend on bison.s1.

Tue Apr 13 14:52:32 1993  Richard Stallman  ([e-mail])

	* Version 1.20 released.

Wed Mar 24 21:45:47 1993  Richard Stallman  ([e-mail])

	* output.c (output_headers): Rename yynerrs if -p.

Thu Mar 18 00:02:17 1993  Noah Friedman  ([e-mail])

        * system.h: Don't try to include stdlib.h unless HAVE_STDLIB_H is
          defined.

        * configure.in: Check for stdlib.h.

Wed Mar 17 14:44:27 1993  Richard Stallman  ([e-mail])

	* bison.simple [__hpux, not __GNUC__]: Declare alloca.
	(yyparse): When printing the expected token types for an error,
	Avoid negative indexes in yycheck and yytname.

Sat Mar 13 23:31:25 1993  Richard Stallman  ([e-mail])

	* Makefile.in (files.o, .c.o): Put CPPFLAGS and CFLAGS last.

Mon Mar  1 17:49:08 1993  Richard Stallman  ([e-mail])

	* bison.simple: Test __sgi like __sparc.

Wed Feb 17 00:04:13 1993  Richard Stallman  ([e-mail])

	* conflicts.c (resolve_sr_conflict): Add extra parens in alloca call.

	* bison.simple [__GNUC__] (yyparse): Declare with prototype.

Fri Jan 15 13:15:17 1993  Richard Stallman  ([e-mail])

	* conflicts.c (print_reduction): Near end, increment fp2 when mask
	recycles.

Wed Jan 13 04:15:03 1993  Richard Stallman  ([e-mail])

	* Makefile.in (bison.s1): New target.  Modifies bison.simple.
	(install): Install bison.s1, without changing it.
	(clean): Delete bison.s1.

Mon Jan  4 20:35:58 1993  Richard Stallman  ([e-mail])

	* reader.c (reader): Put Bison version in comment in output file.

Tue Dec 22 19:00:58 1992  Richard Stallman  ([e-mail])

	* files.c (openfiles): Use .output, not .out, for outfile,
	regardless of spec_name_prefix.

Tue Dec 15 19:22:11 1992  Richard Stallman  ([e-mail])

	* output.c (output_gram): Include yyrhs in the same #if as yyprhs.

Tue Dec 15 18:29:16 1992  Noah Friedman  ([e-mail])

        * output.c (output): output directives checking for __cplusplus as
          well as __STDC__ to determine when to define "const" as an empty
          token.  (Patch from Wolfgang Glunz <[e-mail]>)

Tue Dec  8 21:51:23 1992  David J. MacKenzie  ([e-mail])

	* system.h, conflicts.c: Replace USG with HAVE_STRING_H and
	HAVE_MEMORY_H.

Sat Nov 21 00:37:16 1992  David J. MacKenzie  ([e-mail])

	* Makefile.in: Set and use $(MAKEINFO).

Fri Nov 20 20:45:57 1992  Richard Stallman  ([e-mail])

	* files.c (done) [MSDOS]: Delete the tmpdefsfile with the rest.

Thu Oct  8 21:55:52 1992  Richard Stallman  ([e-mail])

	* Makefile.in (dist): Put configure.bat in the distribution.

Thu Oct  1 09:16:24 1992  David J. MacKenzie  ([e-mail])

	* Makefile.in (install): cd to $(srcdir) before installing info files.

Wed Sep 30 17:18:39 1992  Richard Stallman  ([e-mail])

	* Makefile.in (files.o): Supply $(DEFS), and $(CPPFLAGS).

Fri Sep 25 18:06:28 1992  Richard Stallman  ([e-mail])

	* Version 1.19 released.

	* reader.c (parse_union_decl): Fix ending of C++ comment;
	don't lose the char after the newline.

	* configure.bat: New file.

Thu Sep 24 16:23:15 1992  Richard Stallman  ([e-mail])

	* conflicts.c: Check for using alloca.h as getopt.c does.

Sun Sep  6 08:01:53 1992  Karl Berry  (karl@hayley)

        * files.c (openfiles): open `fdefines' after we have assigned a name
          to `tmpdefsfile', and only if `definesflag' is set.
        (done): only create the real .tab.h file if `definesflag' is set.
        * reader.c (packsymbols): don't close `fdefines' here.

Sat Sep  5 15:02:11 1992  Richard Stallman  ([e-mail])

	* files.c (openfiles): Open fdefines as temp file, like ftable.
	(done): Copy temp defines file to real one, like main output file.

Fri Aug 21 12:47:48 1992  Richard Stallman  ([e-mail])

	* Makefile.in (dist): Don't release mergedir.awk
	(install): Use sed, not awk.  Don't depend on mergedir.awk.
	* mergedir.awk: File effectively deleted.

Wed Jul 29 00:53:25 1992  Richard Stallman  ([e-mail])

	* bison.simple: Test __sparc along with __sparc__.

Sat Jul 11 14:08:33 1992  Richard Stallman  ([e-mail])

	* lex.c (skip_white_space): Count \n just once at end of c++ comment.

Fri Jun 26 00:00:30 1992  Richard Stallman  ([e-mail])

	* bison.simple: Comment fix; #line command updated.

Wed Jun 24 15:12:42 1992  Richard Stallman  ([e-mail])

	* Makefile.in (install): Specify full new file name for the executable.

Mon Jun 22 16:38:24 1992  Richard Stallman  ([e-mail])

	* Makefile.in (dist): Include bison.rnh in distribution.

Sun Jun 21 22:42:13 1992 Eric Youngdale ([e-mail])

    Clean up rough edges in VMS port of bison, add support for remaining
    command line options.

	* bison.cld: Add /version, /yacc, /file_prefix, and /name_prefix
	switches.

	* build.com: General cleanup:  add logic to automatically sense
	which C compiler is present; add code to cwd to the directory
	that contains bison sources; do not define XPFILE, XPFILE1
	(correct defaults are applied in file.c).

	* files.c: Append _tab, not .tab when using /file_prefix under VMS.