[Pharo-users] Parsing SQL in a Pharo system

The PostgresV3 code in squeak uses subclasses of Compiler and Parser to make sure that PG3SchemaMirror subclasses can parse plsql code. That looks like a nice way to work. What do we need to do to do something similar with the Opal based infrastructure? What subclasses do I need, what methods should I override? Stephan