From the pandoc github issues page, looks like they're working on asciidoc. See issue 1465 in the pandoc repo.

-m

On October 13, 2016 3:35:14 AM PDT, "Saša Janiška" <gour@atmarama.com> wrote:
Hello,

I plan to adopt AsciiDoc(tor) as general markup for my writing (web
content, blog posts, study notes etc.) and I’d prefer to use ConTeXt for
my & wife’s presentations over something like reveal.js, so wonder if
anyone has some experienec with the AsciiDoc --> ConTeXt (converted by
Pandoc) toolchaincan?

I use Emacs as my editor (currently on Debian Linux, but soon probably
on FreeBSD/TrueOS)…


Sincerely,
Gour