The Kiama team are pleased to bring you the next release of the library.

Breaking changes

• Attribution
  • Integrate dynamic attributes with the other attributes and simplify their interface (see new Attribution.dynattr attribute builders).

New features

• Attribution
  • Issue 55: Add variants of attribute builders that take a name argument which is used to print the attribute when reporting dependence cycles. E.g., attr ("name") { ... }.
  • Issue 56: Make Attribution a trait as well as an object so it can be reused.
  • Add hasBeenComputedAt(n) method to cached attributes that tells you if they’ve already been evaluated at a particular node n.
  • Make Attributable node property setting skip Either nodes as it already did for options, traversables, tuples etc.
• Rewriting
  • Make Rewriter class into a trait so it can be mixed in.
• Output
  • Add more ASCII symbol printers (e.g., tilde, exclamation) to the pretty printing library.
• Utilities
  • Add keywords method to parser utilities to make it easier to define parsers that match one of a list of keywords.
  • Generalise file reading and writing to allow the character encoding to be specified and to buffer writing.
• Examples
  • Add simple Prolog implementation example.

Fixes

• Attribution
  • Issue 54: Make Attribution.initTree idempotent.
  • Don’t unnecessarily re-evaluate attribute definitions in the down decorator.
• General
  • Issue 53: Move back to JLine 1.0 to regain compatibility with sbt. This fixes a bug where echo was lost when exiting a REPL back to the sbt prompt.

Other

• Publish for both Scala 2.9.2 and 2.10.0.
• Move to Scalatest 1.9.1 and ScalaCheck 1.10.0.
• Remove dependencies on JUnit and Argot.
• Many other minor bug fixes and code style improvements.