Boxer: a demo scalac plugin, embedded in your SBT project.

Ever wish you could inject some extra analysis into the compiler pipeline for your project? You could write a compiler plugin, package, distribute it, and depend on it, but the activation energy for that is pretty high.

Boxer shows you how to embed a custom compiler plugin directly into a sub-project of your SBT project. With this in place, you can edit the plugin, run compile, and immediately see the results in the context of your project.

What's inside

• SBT Project Definition
• Compiler Plugin Descriptor and Sources

The Scala version used is 2.12.x, but the same code also works in 2.11.x.

Sample Output

[info] Compiling 1 Scala source to /Users/jason/code/boxer/plugin/target/scala-2.12/classes...
[info] Packaging /Users/jason/code/boxer/plugin/target/scala-2.12/boxer_2.12-0.1-SNAPSHOT.jar ...
[info] Done packaging.
[info] Compiling 1 Scala source to /Users/jason/code/boxer/main/target/scala-2.12/classes...
[warn] /Users/jason/code/boxer/main/src/main/scala/demo/Demo.scala:8: Value class `Meter` instantiated!
[warn]   println(m2)
[warn]           ^
[warn] one warning found