Re: [boost] Re: ATTN: All Developers Interested in Boost.Preprocessor

From: Rene Rivera (grafik666_at_[hidden])
Date: 2003-05-01 15:59:11

[2003-05-01] Paul Mensonides wrote:

>Rene Rivera wrote:
>> No totally sure what arbitrary macros you mean. But yes, the "escaped"
>> token-string can be anything and it would only get inserted/evaluated
>> as the _last_ step. So it would have to unwind the parse recursion,
>> and then insert the escaped token-string. And with the #eval you
>> could control when any currectly accumulated #escape token-strings
>> are inserted.
>
>What I meant was something like:
>
>#define ID(x) x
>#define MACRO() 123
>
>ID( #escape "MACRO()" )
>
>Are you suggesting that the result should be "MACRO()" or that the
>invocation/processing of the escaped string should be deferred until after
>top-level scanning moves past it (conceptually)?  In that case, it would
expand
>to "123".  BTW, I like the second one better, but only because I can think
of,
>as usual, pathological usages of it. ;)

I also prefer the second, as I also can see "entertaining" uses for it. But
I was considering both at the same time, as in it's a choice to make
experimentally, when and if anyone implements such a thing :-)

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