[Boost-users] [proto] Manipulating _data

Subject: [Boost-users] [proto] Manipulating _data
From: David A. Greene (greened_at_[hidden])
Date: 2010-02-01 23:45:14

So I've had fun tinkering with my lambda-like language.
I moved on to try to introduce scoping, but I'm having
some trouble.  I've attached a simplified example.

Compiling as-is, the test outputs what I would expect.
It seems like the LookupSymbol transform works
brilliantly, so symbol lookup is a go.

However, convincing the grammar to match an expression
that invokes the AddScope transform seems more difficult.
Commenting the #if clause results in an error about converting
a Wrapper<...> to a shared_ptr<Base> which I can only guess
means the grammar is not matching the proto expression.

I've tried all sorts of different things.  I don't think the
UnaryPassThrough transform should be neccessary, but
maybe it does't hurt either.  With or without it, the error
is the same.

What am I missing here?

Thanks!

                            -Dave