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revision 1.967 by eggert, Wed Dec 18 00:10:11 2002 UTC revision 1.968 by eggert, Tue Dec 24 07:47:36 2002 UTC
# Line 1  Line 1 
1    2002-12-21  Paul Eggert  <eggert@twinsun.com>
2    
3            If the user does not define YYSTYPE as a macro, Bison now declares it
4            using typedef instead of defining it as a macro.  POSIX requires this.
5            For consistency, YYLTYPE is also declared instead of defined.
6    
7            %union directives can now have a tag before the `{', e.g., the
8            directive `%union foo {...}' now generates the C code
9            `typedef union foo { ... } YYSTYPE;'; this is for Yacc compatibility.
10            The default union tag is `YYSTYPE', for compatibility with Solaris 9
11            Yacc.  For consistency, YYLTYPE's struct tag is now `YYLTYPE'
12            instead of `yyltype'.
13    
14            `yystype' and `yyltype' are now obsolescent macros instead of being
15            typedefs or tags; they are no longer documented and will be
16            withdrawn in a future release.
17    
18            * data/glr.c (b4_location_type): Remove.
19            (YYSTYPE): Renamed from yystype.
20            (YYSTYPE_IS_DECLARED): New macro, used to prevent double-typedef.
21            (struct YYLTYPE): Renamed from struct yyltype.
22            (YYLTYPE): Renamed from yyltype.
23            (yyltype, yystype): New (and obsolescent) macros,
24            for backward compatibility.
25            * data/yacc.c: Likewise.
26    
27            * data/yacc.c (YYSTYPE): Declare as union YYSTYPE if the user
28            does not specify a union tag.  This is for compatibility with
29            Solaris 9 yacc.
30    
31            * src/parse-gram.y (add_param): 2nd arg is now char * not char
32            const *, since it is now modified by stripping surrounding { }.
33            (current_braced_code): Remove.
34            (PERCENT_DESTRUCTOR, PERCENT_PRINTER, PERCENT_UNION,
35            PERCENT_LEX_PARAM, PERCENT_PARSE_PARAM): Change names to include
36            trailing " {...}".  Now of type <chars>.
37            (grammar_declaration): Adjust to bundled tokens.
38            (code_content): Remove; stripping is now done by add_param.
39            (print_token_value): Print contents of bundled tokens.
40            (token_name): New function.
41    
42            * src/reader.h (braced_code, current_braced_code): Remove.
43            (token_name): New decl.
44    
45            * src/scan-gram.l (handle_dollar, handle_at): Now takes int
46            token_type, not braced_code code_kind.  All uses changed.
47            (SC_PRE_CODE): New state, for scanning after a keyword that
48            has (or usually has) an immediately-following braced code.
49            (token_type): New local var, to keep track of which token type
50            to return when scanning braced code.
51            (<INITIAL>"%destructor", <INITIAL>"%lex-param",
52            <INITIAL>"%parse-param", <INITIAL>"%printer,
53            <INITIAL>"%union"): Set token type and BEGIN SC_PRE_CODE
54            instead of returning a token type immediately.
55            (<INITIAL>"{"): Set token type.
56            (<SC_BRACED_CODE>"}"): Use it.
57            (handle_action_dollar, handle_action_at): Now returns bool
58            indicating success.  Fail if ! current_rule; this prevents a core dump.
59            (handle_symbol_code_dollar, handle_symbol_code_at):
60            Remove; merge body into caller.
61            (handle_dollar, handle_at): Complain in invalid contexts.
62    
63            * NEWS, doc/bison.texinfo: Document the above.
64            * NEWS: Fix years and program names in copyright notice.
65    
66  2002-12-17  Paul Eggert  <eggert@twinsun.com>  2002-12-17  Paul Eggert  <eggert@twinsun.com>
67    
68          * NEWS, doc/bison.texinfo (Parser Function, Pure Calling, Error          * NEWS, doc/bison.texinfo (Parser Function, Pure Calling, Error
# Line 10420  Line 10485 
10485          * REFERENCES: entered into RCS          * REFERENCES: entered into RCS
10486  -----  -----
10487    
10488  Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.  Copyright (C) 1987, 1988, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
10489    1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
10490    
10491  This file is part of GNU Bison.  This file is part of Bison, the GNU Compiler Compiler.
10492    
10493  GNU Bison is free software; you can redistribute it and/or modify  Bison is free software; you can redistribute it and/or modify
10494  it under the terms of the GNU General Public License as published by  it under the terms of the GNU General Public License as published by
10495  the Free Software Foundation; either version 2, or (at your option)  the Free Software Foundation; either version 2, or (at your option)
10496  any later version.  any later version.
10497    
10498  GNU Bison is distributed in the hope that it will be useful,  Bison is distributed in the hope that it will be useful,
10499  but WITHOUT ANY WARRANTY; without even the implied warranty of  but WITHOUT ANY WARRANTY; without even the implied warranty of
10500  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
10501  GNU General Public License for more details.  GNU General Public License for more details.
10502    
10503  You should have received a copy of the GNU General Public License  You should have received a copy of the GNU General Public License
10504  along with GNU Bison; see the file COPYING.  If not, write to  along with Bison; see the file COPYING.  If not, write to
10505  the Free Software Foundation, Inc., 59 Temple Place - Suite 330,  the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
10506  Boston, MA 02111-1307, USA.  Boston, MA 02111-1307, USA.

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