Re: [boost] [request] Sun and IBM users...

From: Toon Knapen (toon.knapen_at_[hidden])
Date: 2004-09-02 05:49:27

Paul Mensonides wrote:

> Can someone test the following preprocessor code on the Sun and IBM
> preprocessors:

On IBM this results in following error msg:

"pp.cpp", line 14.1: 1540-0063 (S) The text "1" is unexpected.

(my file was called pp.cpp).

Hope this info is still usefull regardless of the high latency of my answer.

> 
> #include <boost/preprocessor/detail/split.hpp>
> #include <boost/preprocessor/punctuation/comma.hpp>
> #include <boost/preprocessor/punctuation/paren.hpp>
> #include <boost/preprocessor/tuple/eat.hpp>
> 
> #define IS_NULLARY(x) \
>     BOOST_PP_SPLIT(1, IS_NULLARY_C x BOOST_PP_COMMA() 0) \
>     /**/
> #define IS_NULLARY_C() \
>     ~, 1 BOOST_PP_RPAREN() \
>     BOOST_PP_TUPLE_EAT(2) BOOST_PP_LPAREN() ~ \
>     /**/
> 
> IS_NULLARY(())    // 1
> IS_NULLARY(()abc) // 1
> IS_NULLARY(+)     // 0
> IS_NULLARY(xyz)   // 0
> 
> #define IS_UNARY(x) IS_NULLARY(IS_UNARY_C x)
> #define IS_UNARY_C(a) ()
> 
> IS_UNARY((a))    // 1
> IS_UNARY((a)abc) // 1
> IS_UNARY(+)      // 0
> IS_UNARY(xyz)    // 0
> 
> Regards and thanks,
> Paul Mensonides
> 
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