Toward Condensers

[Mark Reinhold]

A few of us have been thinking about how condensers might work.  We now
have a prototype design and implementation of a condenser API and tool.

We’ve deliberately started small, focusing on principles of condenser
operation and a minimal set of features sufficient for the simplest
condensers, i.e., those that don’t require additional changes to the
Platform Specification.

Design note: https://openjdk.org/projects/leyden/notes/03-toward-condensers

Summary:

  We elaborate the concept of composable condensers to introduce a
  simple, abstract, immutable, data-driven model of applications so that
  condensers can be expressed as transformers of instances of the model.
  The model is sufficient to express simple condensers; we include two
  examples.

This is just a starting point; we expect to evolve it considerably going
forward.  We’ll publish the prototype code shortly after we return from
the upcoming JVM Language Summit.

- Mark