An interesting approach! But old META II (mentioned in the original article) system and its derivatives are looking more practical to me. I think, it's more eff

An interesting approach! But old META II (mentioned in the original article) system and its derivatives are looking more practical to me. I think, it's more effective to have two simple DSLs, one for parsing and another one for tree transforming like it was done in Cwic and TREE-МЕТА, which are grew from original META II (self-described in a few lines of code).