storing line numbers of expressions with boost.spirit 2

Question

I am planning on doing a script transformation utility (for extended diagnostic information) using Boost.Spirit 2.

While there is support for line information etc. for parsing errors, how i can store line numbers for successfully parsed expressions with Qi?

Answer 1

As per the mailing list, Spirit.Classic positional iterators can also be used with Spirit 2.
There is also an article on an iter_pos-parser on the Spirit-blog.

_{I will update when i had time to test.}