Getting Started

To get started:

Fork and clone the repository on your machine:

git clone [email protected]:<your github username>/dotty.git
cd dotty

You need to have scala source in "../scala"

And then, in the console:

sbt compile
sbt run
sbt test

If tests fail with such message

***** scanning ../scala/src/compiler/scala/tools/nsc/doc/html/page/Template.scala
[error] Test test.ScannerTest.scanScala failed: unclosed character literal
[error]    at dotty.tools.dotc.reporting.Reporter$.Diagnostic(Reporter.scala:42)
[error]    at dotty.tools.dotc.reporting.Reporting$class.error(Reporter.scala:103)
[error]    at dotty.tools.dotc.core.Contexts$Context.error(Contexts.scala:50)
[error]    at dotty.tools.dotc.parsing.Scanners$Scanner.error(Scanners.scala:937)
[error]    at dotty.tools.dotc.parsing.Scanners$Scanner.fetchSingleQuote$1(Scanners.scala:373)
[error]    at dotty.tools.dotc.parsing.Scanners$Scanner.fetchToken(Scanners.scala:377)
[error]    at dotty.tools.dotc.parsing.Scanners$Scanner.nextToken(Scanners.scala:169)
[error]    at test.ScannerTest.scan(ScannerTest.scala:25)

it means that you have and old scala/scala clone(probably pre 2.11). Updating it to current master should fix this error.

To use the Scala IDE:

Run sbt eclipse to generate the project definition files.

Notes:

• Download the Bundle of the Scala IDE for Eclipse for Scala 2.11.
• Alternatively, download Eclipse Standard 4.3.x (Kepler) or 4.2.x (Juno) and install the Scala IDE for Scala 2.11.
• There are 2 spurious version incompatibility warnings
• To run dotty in Eclipse:
  • Navigate to dotty.tools.dotc.Main
  • Run As... > Scala Application
  • then go to Run Configurations > Main$ > Classpath > Bootstrap entries:
    • add the Scala library (Advanced... > Add library... > Scala library)
    • add the dotty classfiles (Add projects... > [x] dotty)
  • then go to Run Configurations > Main$ > Arguments and add ${project_loc}/examples/hello.scala