C++: Implement code transformation in parser or tree

[Sohail Somani <sohail at taggedtype dot net>]

Hi, 

I'm trying to implement proposal n1968 in g++ which basically adds
lambda functions to C++. The obvious way of implementing this is by a
simple translation which generates a function object which is created
where the lambda function is created. Something like:

for_each(b,e,<>(int & t){t++;});

would become:

struct __some_random_name
{
    void operator()(int & t){t++;}
};

for_each(b,e,__some_random_name());

Would this require a new tree node like LAMBDA_FUNCTION or should the
parser do the translation? In the latter case, no new nodes should be
necessary (I think).

Thanks!

Sohail