[jdt-core-dev] Why different internal AST and org.eclipse.jdt.core.dom.A

[Henrich Kraemer <henrich.kraemer@xxxxxxxxxx>]

I would like to understand better what
the rationale is of having the interface AST org.eclipse.jdt.core.dom
vs the internal abstract syntax tree.

I can see that this shields the interface
of implementation changes. Is this the only reason?

What capabilities are left out from
the interface?
What is the plan when the language evolves?
What are the costs of having this layer?


Thanks Henrich