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c++: do not export YYTOKEN_TABLE and YYERROR_VERBOSE.

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* src/output.c (prepare_symbols): Do not define b4_token_table.
(prepare): Define b4_token_table_flag.
* data/bison.m4 (b4_token_table_if): New.
Arm it when error-verbose.
* data/glr.c, data/yacc.c (YYTOKEN_TABLE): Remove.
Use m4.
* data/lalr1.cc: Likewise.
(YYERROR_VERBOSE): Remove.
* NEWS, doc/bison.texi: Document this.
This commit is contained in:
Akim Demaille
2012-06-25 16:52:30 +02:00
parent 9bcffa0c13
commit 258cddbc36
7 changed files with 42 additions and 55 deletions
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26
NEWS
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@@ -13,14 +13,16 @@ GNU Bison NEWS
generated for C supprt ISO C90, and are tested with ISO C99 and ISO C11
compilers.
*** Deprecated features
*** Features deprecated since Bison 1.875
The definitions of yystype and yyltype will be removed, as announced since
Bison 1.875. Use YYSTYPE and YYLTYPE only.
The definitions of yystype and yyltype will be removed; use YYSTYPE and
YYLTYPE.
YYPARSE_PARAM and YYLEX_PARAM, which were deprecated in favor of
%parse-param and %lex-param (introduced in Bison 1.875), will no longer be
supported.
YYPARSE_PARAM and YYLEX_PARAM, deprecated in favor of %parse-param and
%lex-param, will no longer be supported.
Support for the preprocessor symbol YYERROR_VERBOSE will be removed, use
%error-verbose.
*** The generated header will be included (yacc.c)
@@ -30,9 +32,9 @@ GNU Bison NEWS
because existing versions of ylwrap (e.g., Automake 1.12.1) do not support
it.
** Headers (yacc.c, glr.c, glr.cc)
** Headers
*** Guards
*** Guards (yacc.c, glr.c, glr.cc)
The generated headers are now guarded, as is already the case for C++
parsers (lalr1.cc). For intance, with --defines=foo.h:
@@ -42,7 +44,7 @@ GNU Bison NEWS
...
#endif /* !YY_FOO_H */
*** New declarations
*** New declarations (yacc.c, glr.c)
The generated header now declares yydebug and yyparse. Both honor
--name-prefix=bar_, and yield
@@ -57,6 +59,12 @@ GNU Bison NEWS
in order to facilitate the inclusion of several parser headers inside a
single compilation unit.
*** Exported symbols in C++
The symbols YYTOKEN_TABLE and YYERROR_VERBOSE, which were defined in the
header, are removed, as they prevent the possibility of including several
generated headers from a single compilation unit.
* Noteworthy changes in release 2.5.1 (2012-06-05) [stable]
** Future changes: