phoenix is some library to create lambda functions. This is not what I need. I want to get objects out, which I can later work on.

What sort of "work" do you want to do with these objects? Phoenix *is* a library that creates objects representing pieces of C++ code - these objects can then be "called" (operator()) to execute the code they represent. For example, the phoenix expression if_(ref(x) > 5) [ std::cout << ref(x) ] represents an object that, when called, executes the code if (x > 5) { std::cout << x; } (where x is an already-declared variable in your program). Whether or not Phoenix is suitable for you depends on what you want to do with these objects. Regards, Nate.

On Sun, Jul 31, 2011 at 10:00:18AM -0700, Peter Foelsche wrote:

"Nathan Ridge" wrote in message news:BLU162-w391671204D2BB963EB584996390@phx.gbl...

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phoenix is some library to create lambda functions. This is not what I need. I want to get objects out, which I can later work on.

What sort of "work" do you want to do with these objects?

I want to manipulate these objects. I want to iterate over these objects and create a new set of objects.

I don't think anyone understands what you're trying to do. If you want to capture and manipulate the syntax tree of arbitrary expressions, consider something like Boost.Proto. Proto is commonly used to make embedded languages with C++ syntax. This will not capture things like flow control structures, but you can trivially define your own if_, for_-alikes through terminals, the semantics of which you define in your Proto grammar. If this sounds like something that fits your use case, consider watching the Boostcon presentations on Proto, and read the documentation. -- Lars Viklund | zao@acc.umu.se