Re: [Boost-bugs] [Boost C++ Libraries] #1752: Feeding new tokens to be processed from a "#pragma wave" directive

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #1752: Feeding new tokens to be processed from a "#pragma wave" directive
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2008-04-02 12:27:03

#1752: Feeding new tokens to be processed from a "#pragma wave" directive
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  Reporter:  caminant_at_[hidden]  |       Owner:  hkaiser 
      Type:  Feature Requests    |      Status:  assigned
 Milestone:  Boost 1.36.0        |   Component:  wave    
   Version:  Boost 1.34.1        |    Severity:  Problem 
Resolution:                      |    Keywords:          
---------------------------------+------------------------------------------
Changes (by hkaiser):

  * status:  new => assigned

Comment:

 Replying to [ticket:1752 caminant_at_[hidden]]:
 > While processing a custom "#pragma wave" directive using a struct
 derived from
 > context_policies::default_preprocessing_hooks like in this example :
 >
 [snipped example]
 >
 > it is possible to feed tokens in the "pending" container, that are
 copied
 > verbatim to the output. What I think it would be very interesting is
 that
 > this tokens are not copied verbatim, but parsed and processed. For
 instance,
 > you could add "#define" or "#include" directives and they would be
 > processed normally. Right now they are just copied.

 It's currently implemented the way it is to conform with the #define
 preprocessor directive for which it is undefined behaviour to generate a
 token sequence comprising in another preprocessor directive.

 Do you have a real use case for this functionality or is it just a 'nice
 to have' feature?

 Regards Hartmut

-- 
Ticket URL: <http://svn.boost.org/trac/boost/ticket/1752#comment:1>
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