Not yet. I am working on a replacement for the Asciidoc/Docbook toolchain which I am not satisfied with. It handles an extended version of Asciidoc and aims to produce code for a few output formats (HTML, TeX).

Nimrod includes rst parsing and html/tex generation (http://build.nimrod-lang.org/docs/rstgen.html). While orthogonal to your quest you may want to look into its implementation for inspiration (or adopt rst instead of asciidoc for your publishing needs).

Interesting. I'll take a closer look at it.