Add initial CompilerCallback implementation for IntelliJ

This adds some simple callbacks to Dotty that should be enough to
get basic integration from IntelliJ.

1 files changed, 8 insertions, 1 deletions

diff --git a/src/dotty/tools/dotc/Driver.scala b/src/dotty/tools/dotc/Driver.scala
index 22170a478..1627b6e48 100644
--- a/src/dotty/tools/dotc/Driver.scala
+++ b/src/dotty/tools/dotc/Driver.scala
@@ -34,7 +34,10 @@ abstract class Driver extends DotClass {
 
   def setup(args: Array[String], rootCtx: Context): (List[String], Context) = {
     val summary = CompilerCommand.distill(args)(rootCtx)
-    implicit val ctx: Context = initCtx.fresh.setSettings(summary.sstate)
+    // FIXME: We should reuse rootCtx instead of creating newCtx, but this
+    // makes some tests fail with "denotation module _root_ invalid in run 2."
+    val newCtx = initCtx.setCompilerCallback(rootCtx.compilerCallback)
+    implicit val ctx: Context = newCtx.fresh.setSettings(summary.sstate)
     val fileNames = CompilerCommand.checkUsage(summary, sourcesRequired)
     (fileNames, ctx)
   }
@@ -44,6 +47,10 @@ abstract class Driver extends DotClass {
     doCompile(newCompiler(), fileNames)(ctx)
   }
 
+  def process(args: Array[String], callback: CompilerCallback): Reporter = {
+    process(args, initCtx.setCompilerCallback(callback))
+  }
+
   // We overload `process` instead of using a default argument so that we
   // can easily call this method using reflection from `RawCompiler` in sbt.
   def process(args: Array[String]): Reporter = {