Initialize context in REPL

This broke under the recent introduction of the JS backend, because now
the context needs to be initialized before the platform can be selected.
So invoking `doti` immediately gave an IllegalStateException.

No big deal to fix, but it shows how sorely we are lacking REPL tests.

3 files changed, 4 insertions, 2 deletions

diff --git a/src/dotty/tools/dotc/core/Contexts.scala b/src/dotty/tools/dotc/core/Contexts.scala
index 2fc958a49..fd0cff94e 100644
--- a/src/dotty/tools/dotc/core/Contexts.scala
+++ b/src/dotty/tools/dotc/core/Contexts.scala
@@ -544,7 +544,7 @@ object Contexts {
      */
     def initialize()(implicit ctx: Context): Unit = {
       _platform = newPlatform
-      definitions.init
+      definitions.init()
     }
 
     def squashed(p: Phase): Phase = {
diff --git a/src/dotty/tools/dotc/core/Definitions.scala b/src/dotty/tools/dotc/core/Definitions.scala
index 6f8a8f837..d8c882d5c 100644
--- a/src/dotty/tools/dotc/core/Definitions.scala
+++ b/src/dotty/tools/dotc/core/Definitions.scala
@@ -798,7 +798,7 @@ class Definitions {
   private[this] var _isInitialized = false
   private def isInitialized = _isInitialized
 
-  def init(implicit ctx: Context) = {
+  def init()(implicit ctx: Context) = {
     this.ctx = ctx
     if (!_isInitialized) {
       // force initialization of every symbol that is synthesized or hijacked by the compiler
diff --git a/src/dotty/tools/dotc/repl/CompilingInterpreter.scala b/src/dotty/tools/dotc/repl/CompilingInterpreter.scala
index 7d1da1419..dd7189ddf 100644
--- a/src/dotty/tools/dotc/repl/CompilingInterpreter.scala
+++ b/src/dotty/tools/dotc/repl/CompilingInterpreter.scala
@@ -60,6 +60,8 @@ class CompilingInterpreter(out: PrintWriter, ictx: Context) extends Compiler wit
   import ast.untpd._
   import CompilingInterpreter._
 
+  ictx.base.initialize()(ictx)
+
   /** directory to save .class files to */
   val virtualDirectory =
     if (ictx.settings.d.isDefault(ictx)) new VirtualDirectory("(memory)", None)