Other SCROLL related Projects

SCROLLGen

Code generation from CROM models to SCROLL code.

SCROLLAnnotations

This project contains the @Inspect annotation supporting the SCROLL reflection magic. Querying for role-specific structure is done during the instantiation phase and gets cached.

SCROLLCompilerPlugin

This project contains a Scala compiler plugin supporting SCROLL using static code analysis to give the developer more hints/warnings on role-binding / method resolution.

Consider the following example:

class Person(val firstName: String)

val peter = new Person("Peter")

new Compartment {
  println(+peter fullName)
}

With SCROLL, the code would still execute normally but will print:

Left(No role with behavior 'fullName' could be found for the player 'Person@39d87c5f'!)

All calls to role-specific behavior or structure always returns an instance of Either. With the Scala Dynamic Trait no static type-checks are possible anymore. Hence, the SCROLLCompilerPlugin will generate meaningful warnings/errors for you, e.g., here:

[error] Test.scala:6: selectDynamic as 'fullName' detected on: 'Person'.
[error]  No dynamic extensions specified for 'Person'!
[error]         println(+peter fullName)
[error]                        ^
[error] Test.scala:6: Neither 'Person', nor its dynamic extensions offer the called behavior!
[error]  This may indicate a programming error!
[error]         println(+peter fullName)
[error]     

So we can fix this.

class Person(val firstName: String)

val peter = new Person("Peter")

new Compartment {
  class PersonExtension(val lastName: String) {
    def fullName(): String = {
      val first: String = +this firstName
      val last: String = lastName
      first + " " + last
    }
  }

  val name: String = peter play new PersonExtension("Meier") fullName()
  println(name)
}

[warn] Test.scala:6: applyDynamic as 'fullName' detected on: 'Person'.
[warn]  For 'Person' the following dynamic extensions are specified:
[warn]         - 'Person' -> 'PersonExtension'
[warn]  Make sure at least one of the following dynamic extensions is bound:
[warn]         - 'PersonExtension' maybe bound at:
[warn]                  [line:14|col:28] at source '.../Test.scala'
[warn]                  ...
[warn]         val name: String = peter play new PersonExtension("Meier") fullName()
[warn]  

SCROLLBoot

Small SCROLL boot demo application build with Scala to show how to use SCROLL in your Scala project.

SCROLLAndroid

SCROLL "Hello World!" example project for Android. Warning: it uses a very old SCROLL (0.9.1).