🚀 go-pugleaf

OK Problem Scenario:

There is a templatized data structure that is based on type DATA.  This
data structure features a method that depends on a method in type DATA. 
Thus, for semantic reasons, the template assumes that DATA is a pointer
type.

So, here is the method:

template <class DATA>
void GIDTable::ReadFromStream(LStream *inStream)
{
   DATA data;

   ...

   data = new DATA;
   (*data).ReadFromStream(inStream);

   ...
}


The problem occurs on the second line.  data is of type DATA, so you
really want to allocate a new (*DATA).  IE, if DATA is a CBar *, then data
is a CBar *,
so we want it to say: data = new CBar;

How can I do this, only knowing the pointer type?
IE, is there a version of new that can take the pointer type, rather than
the actual type?  RTTI is fair game.


Please Help, this is an actual problem!

      -Adam

-- 
Adam Nash
CS 108 TA
adamnash@cs.stanford.edu
http://www-leland.stanford.edu/~smashman
Stanford University - Computer Science
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