diff options
Diffstat (limited to 'src/compiler/scala/tools/nsc/interactive/CompilerControl.scala')
| -rw-r--r-- | src/compiler/scala/tools/nsc/interactive/CompilerControl.scala | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/src/compiler/scala/tools/nsc/interactive/CompilerControl.scala b/src/compiler/scala/tools/nsc/interactive/CompilerControl.scala index f2d59206e0..1b91b06942 100644 --- a/src/compiler/scala/tools/nsc/interactive/CompilerControl.scala +++ b/src/compiler/scala/tools/nsc/interactive/CompilerControl.scala @@ -10,6 +10,8 @@ import scala.tools.nsc.io.AbstractFile import scala.tools.nsc.util.{SourceFile, Position, WorkScheduler} import scala.tools.nsc.symtab._ import scala.tools.nsc.ast._ +import scala.tools.nsc.util.FailedInterrupt +import scala.tools.nsc.util.EmptyAction /** Interface of interactive compiler to a client such as an IDE * The model the presentation compiler consists of the following parts: @@ -48,7 +50,7 @@ trait CompilerControl { self: Global => /** The scheduler by which client and compiler communicate * Must be initialized before starting compilerRunner */ - protected[interactive] val scheduler = new WorkScheduler + @volatile protected[interactive] var scheduler = new WorkScheduler /** Return the compilation unit attached to a source file, or None * if source is not loaded. @@ -374,6 +376,25 @@ trait CompilerControl { self: Global => response raise new MissingResponse } + /** A do-nothing work scheduler that responds immediately with MissingResponse. + * + * Used during compiler shutdown. + */ + class NoWorkScheduler extends WorkScheduler { + + override def postWorkItem(action: Action) = synchronized { + action match { + case w: WorkItem => w.raiseMissing() + case e: EmptyAction => // do nothing + case _ => println("don't know what to do with this " + action.getClass) + } + } + + override def doQuickly[A](op: () => A): A = { + throw new FailedInterrupt(new Exception("Posted a work item to a compiler that's shutting down")) + } + } + } // ---------------- Interpreted exceptions ------------------- |