Aladdin - Scala Bugtracking
[#589] project: compiler priority: low category: bug
submitter assigned to status date submitted
Sean _ _ 2006-05-08 17:17:23.0
subject [contrib #145] NPE in type adapter
code 
From lampion.parsers.Matcher.scala in plugin/lampion SVN project:

trait Matcher extends PrecedenceParser {
 ...
 trait MatcherToken extends PrecedenceToken {...}
 trait Matchable extends MatcherToken {
  ...
  override def replaceWith(node : Node) : Unit = {
   if (matching != null) {
     val engine = new Engine(new Segment(self, self));
   }
   super.replaceWith(node);
  }
  ...
  class Engine(segment : Segment) {...}
}
what happened 
From command line (in lampion/src, scalac -sourcepath . lampion/parsing/Matcher.scala) and IDE:

java.lang.NullPointerException
	at scala.tools.nsc.transform.Erasure$Eraser.adaptMember(Erasure.scala:305)
	at scala.tools.nsc.transform.Erasure$Eraser.typed1(Erasure.scala:363)
	at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:1627)
	at scala.tools.nsc.typechecker.Typers$Typer.typedArg$0(Typers.scala:1024)
	at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$47.apply(Typers.scala:1028)
	at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$47.apply(Typers.scala:1028)
	at scala.List$.loop$0(List.scala:232)
	at scala.List$.mapConserve(List.scala:249)
	at scala.tools.nsc.typechecker.Typers$Typer.typedArgs$0(Typers.scala:1028)
	at scala.tools.nsc.typechecker.Typers$Typer.tryTypedArgs$0(Typers.scala:1101)
	at scala.tools.nsc.typechecker.Typers$Typer.tryTypedApply$0(Typers.scala:1124)
	at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:1512)
	at scala.tools.nsc.transform.Erasure$Eraser.typed1(Erasure.scala:363)
	at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:1627)
	at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:1657)
	at scala.tools.nsc.typechecker.Typers$Typer.transformedOrTyped(Typers.scala:1691)
	at scala.tools.nsc.typechecker.Typers$Typer.typedValDef(Typers.scala:704)
	at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:1304)
	at scala.tools.nsc.transform.Erasure$Eraser.typed1(Erasure.scala:363)
	at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:1627)
	at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:1653)
	at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$45.apply(Typers.scala:973)
	at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$45.apply(Typers.scala:963)
	at scala.List$.loop$0(List.scala:232)
	at scala.List$.mapConserve(List.scala:249)
	at scala.tools.nsc.typechecker.Typers$Typer.typedStats(Typers.scala:963)
	at scala.tools.nsc.typechecker.Typers$Typer.typedBlock(Typers.scala:866)
	at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:1350)
	at scala.tools.nsc.transform.Erasure$Eraser.typed1(Erasure.scala:363)
	at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:1627)
	at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:1657)
	at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:1414)
	at scala.tools.nsc.transform.Erasure$Eraser.typed1(Erasure.scala:363)
	at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:1627)
	at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:1653)
	at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$45.apply(Typers.scala:973)
	at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$45.apply(Typers.scala:963)
	at scala.List$.loop$0(List.scala:232)
	at scala.List$.mapConserve(List.scala:249)
	at scala.tools.nsc.typechecker.Typers$Typer.typedStats(Typers.scala:963)
	at scala.tools.nsc.typechecker.Typers$Typer.typedBlock(Typers.scala:866)
	at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:1350)
	at scala.tools.nsc.transform.Erasure$Eraser.typed1(Erasure.scala:363)
	at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:1627)
	at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:1657)
	at scala.tools.nsc.typechecker.Typers$Typer.transformedOrTyped(Typers.scala:1691)
	at scala.tools.nsc.typechecker.Typers$Typer.typedDefDef(Typers.scala:813)
	at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:1307)
	at scala.tools.nsc.transform.Erasure$Eraser.typed1(Erasure.scala:363)
	at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:1627)
	at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:1653)
	at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$45.apply(Typers.scala:973)
	at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$45.apply(Typers.scala:963)
	at scala.List$.loop$0(List.scala:232)
	at scala.List$.mapConserve(List.scala:249)
	at scala.List$.loop$0(List.scala:236)
	at scala.List$.mapConserve(List.scala:249)
	at scala.tools.nsc.typechecker.Typers$Typer.typedStats(Typers.scala:963)
	at scala.tools.nsc.typechecker.Typers$Typer.typedTemplate(Typers.scala:687)
	at scala.tools.nsc.typechecker.Typers$Typer.typedClassDef(Typers.scala:625)
	at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:1298)
	at scala.tools.nsc.transform.Erasure$Eraser.typed1(Erasure.scala:363)
	at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:1627)
	at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:1653)
	at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$45.apply(Typers.scala:973)
	at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$45.apply(Typers.scala:963)
	at scala.List$.loop$0(List.scala:232)
	at scala.List$.mapConserve(List.scala:249)
	at scala.List$.loop$0(List.scala:236)
	at scala.List$.mapConserve(List.scala:249)
	at scala.List$.loop$0(List.scala:236)
	at scala.List$.mapConserve(List.scala:249)
	at scala.tools.nsc.typechecker.Typers$Typer.typedStats(Typers.scala:963)
	at scala.tools.nsc.typechecker.Typers$Typer.typedTemplate(Typers.scala:687)
	at scala.tools.nsc.typechecker.Typers$Typer.typedClassDef(Typers.scala:625)
	at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:1298)
	at scala.tools.nsc.transform.Erasure$Eraser.typed1(Erasure.scala:363)
	at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:1627)
	at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:1653)
	at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$45.apply(Typers.scala:973)
	at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$45.apply(Typers.scala:963)
	at scala.List$.loop$0(List.scala:232)
	at scala.List$.mapConserve(List.scala:249)
	at scala.tools.nsc.typechecker.Typers$Typer.typedStats(Typers.scala:963)
	at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:1294)
	at scala.tools.nsc.transform.Erasure$Eraser.typed1(Erasure.scala:363)
	at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:1627)
	at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:1653)
	at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$45.apply(Typers.scala:973)
	at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$45.apply(Typers.scala:963)
	at scala.List$.loop$0(List.scala:232)
	at scala.List$.mapConserve(List.scala:249)
	at scala.tools.nsc.typechecker.Typers$Typer.typedStats(Typers.scala:963)
	at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:1294)
	at scala.tools.nsc.transform.Erasure$Eraser.typed1(Erasure.scala:363)
	at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:1627)
	at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:1653)
	at scala.tools.nsc.transform.Erasure$ErasureTransformer$$anonfun$23.apply(Erasure.scala:616)
	at scala.tools.nsc.transform.Erasure$ErasureTransformer$$anonfun$23.apply(Erasure.scala:613)
	at scala.tools.nsc.symtab.SymbolTable.atPhase(SymbolTable.scala:41)
	at scala.tools.nsc.transform.Erasure$ErasureTransformer.transform(Erasure.scala:613)
	at scala.tools.nsc.ast.Trees$Transformer.transformUnit(Trees.scala:1039)
	at scala.tools.nsc.transform.Transform$Phase.apply(Transform.scala:22)
	at scala.tools.nsc.Global$GlobalPhase.applyPhase(Global.scala:210)
	at scala.tools.nsc.Global$GlobalPhase$$anonfun$1.apply(Global.scala:199)
	at scala.tools.nsc.Global$GlobalPhase$$anonfun$1.apply(Global.scala:199)
	at scala.Iterator$class.foreach(Iterator.scala:304)
	at scala.collection.mutable.ListBuffer$$anon$0.foreach(ListBuffer.scala:216)
	at scala.tools.nsc.Global$GlobalPhase.run(Global.scala:199)
	at scala.tools.nsc.Global$Run.compileSources(Global.scala:436)
	at scala.tools.nsc.Global$Run.compile(Global.scala:494)
	at ch.epfl.lamp.sdt.build.ScalaCompilerManager$ScalaCompiler.compile(ScalaCompilerManager.java:186)
	at ch.epfl.lamp.sdt.build.ScalaProjectBuilder.build(ScalaProjectBuilder.java:76)
	at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:603)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:167)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:201)
	at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:230)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:233)
	at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:252)
	at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:285)
	at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:145)
	at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:208)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:58)
what expected
[back to overview]
Changes of this bug report
Sean  edited on  2006-05-08 17:17:56.0
Forgot to log in to alaadin (again).