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Re: Bison 1.30f
From: |
Hans Aberg |
Subject: |
Re: Bison 1.30f |
Date: |
Sun, 16 Dec 2001 11:36:07 +0100 |
At 21:38 -0800 2001/12/15, Paul Eggert wrote:
>> > It assumes that the values can be copied merely by
>> >copying their bits. It uses memcpy in places.
>>
>> Can you give examples of this (so I can think more about it)?
>
>Sure: just look for yymemcpy in bison.simple.
The the othe posts.
>> I figure POSIX says something the presence of a Yacc compatible program.
>
>Yes, that's it.
I think that you perhaps misread it, because first you said
>Also, strictly speaking it is required for POSIX conformance.
>POSIX 1003.1-2001 says:
>
> Conforming applications shall not use names beginning in yy or YY
> since the yacc parser uses such names. Many of the names appear in the
> final output of yacc, and thus they should be chosen to conform with
> any additional rules created by the C compiler to be used. In
> particular they appear in #define statements.
and later you say:
>> As for the real C++ support, I think that names yyfoo should become
>> yy::foo, and YYFOO macro names should as far as possible be eliminated and
>> replaced by yy C++ names. For example, in C++, one might replace
>> # define help_key 258
>> by
>> const int help_key = 258;
>> which would make use of fewer macros.
>
>For C, this would contradict the POSIX standard, which requires that
>the symbols be visible to the preprocessor. It would also break some
>real code.
The first quote does not says that the names should be macros, but that
some of the yy names _might_be_ macros. Therefore conforming application
should not use them.
Hans Aberg
- Re: Bison 1.30f, (continued)
- Re: Bison 1.30f, Hans Aberg, 2001/12/14
- Re: Bison 1.30f, Paul Eggert, 2001/12/14
- Re: Bison 1.30f, Hans Aberg, 2001/12/14
- Re: Bison 1.30f, Paul Eggert, 2001/12/14
- Re: Bison 1.30f, Hans Aberg, 2001/12/15
- Re: Bison 1.30f, Akim Demaille, 2001/12/15
- Re: Bison 1.30f, Hans Aberg, 2001/12/15
- Re: Bison 1.30f, Hans Aberg, 2001/12/15
- Re: Bison 1.30f, Paul Eggert, 2001/12/17
- Re: Bison 1.30f, Paul Eggert, 2001/12/16
- Re: Bison 1.30f,
Hans Aberg <=
- Re: Bison 1.30f, Paul Eggert, 2001/12/17
- Re: Bison 1.30f, Hans Aberg, 2001/12/18
- Re: Bison 1.30f, Paul Eggert, 2001/12/18
- Re: Bison 1.30f, Hans Aberg, 2001/12/19
- Re: Bison 1.30f, Paul Eggert, 2001/12/19
- Re: Bison 1.30f, Hans Aberg, 2001/12/20
- Re: Bison 1.30f, Magnus Fromreide, 2001/12/20
- Re: Bison 1.30f, Hans Aberg, 2001/12/21
- Re: Bison 1.30f, Magnus Fromreide, 2001/12/21
- Re: Bison 1.30f, Hans Aberg, 2001/12/21