Compiler does not honor -Ystop option

Hello,

I am trying to upgrade the Scala Mojo extractor, it was fairly easy =
except for the one problem. The compiler does not appear to honor the =
stop option:

class MojoExtractorCompiler(project: MavenProject) extends =
MavenProjectTools with MojoExtractionInfo {
//Method to extract mojo description from a source file.
def extract(sourceFiles: String*): Seq[MojoDescriptor] =3D {
//helper method to initialize settings
def initialize: (Settings, Reporter) =3D {
val settings =3D new Settings();
//TODO - Set settings
settings.classpath.value =3D getCompileClasspathString(project)
// settings.stop.tryToSet(List("typer"))
settings.stop.value =3D List("typer")
println("TRACER: unparsing=3D " + settings.stop)
// settings.print.value =3D List("typer")
settings.noassertions.value =3D true
// val dirs =3D for(dir =E2=86=90 =
project.getCompileSourceRoots().asInstanceOf[java.util.List[String]]) =
yield dir
=
settings.sourcepath.tryToSet(project.getCompileSourceRoots().asInstanceOf[=
java.util.List[String]].toList)
settings.showPhases.value =3D true
val reporter =3D new ConsoleReporter(settings);
(settings, reporter)
}

//helper method to execute presentation compiler
def execute(settings: Settings, reporter: Reporter) =3D {
val compiler =3D new Global(settings, reporter) with =
MojoAnnotationExtractor {
//override def onlyPresentation =3D true
}
//Extract mojo description
def extractMojos(unit: compiler.CompilationUnit) =3D {
println("TRACER: extracting: " + unit)
for (info <- compiler.parseCompilationUnitBody(unit.body)) yield {
extractMojoDescriptor(info)
}
}

val run =3D new compiler.Run
println("TRACER: Typer phase: " + =
run.phaseNamed("parser").description)

// run.phaseNamed("parser").run
run.compile(sourceFiles.toList)
println("TRACER: Compiled up to phase: " + compiler.globalPhase)
for (unit <- run.units if !unit.isJava) yield {
extractMojos(unit)
}
}

val (settings, reporter) =3D initialize
println("TRACER: Classpath =3D " + settings.classpath)
execute(settings, reporter).toList.flatMap(x =3D> x)
}
}

setting the stop property to the typer with settings.stop.value =3D =
List("typer") results in:
[INFO] [INFO] Trace
[INFO] java.lang.AssertionError: assertion failed
[INFO] at scala.Predef$.assert(Predef.scala:79)
[INFO] at =
scala.tools.nsc.symtab.SymbolTable.phase_$eq(SymbolTable.scala:70)
[INFO] at =
scala.tools.nsc.symtab.SymbolTable.atPhase(SymbolTable.scala:103)
[INFO] at =
scala.tools.nsc.Global$Run$$anonfun$scala$tools$nsc$Global$Run$$resetPacka=
geClass$1.apply(Global.scala:869)
[INFO] at =
scala.tools.nsc.Global$Run$$anonfun$scala$tools$nsc$Global$Run$$resetPacka=
geClass$1.apply(Global.scala:869)
[INFO] at =
scala.tools.nsc.symtab.SymbolTable.atPhase(SymbolTable.scala:104)
[INFO] at =
scala.tools.nsc.Global$Run.scala$tools$nsc$Global$Run$$resetPackageClass(G=
lobal.scala:868)
[INFO] at =
scala.tools.nsc.Global$Run$$anonfun$compileSources$3.apply(Global.scala:77=
6)
[INFO] at =
scala.tools.nsc.Global$Run$$anonfun$compileSources$3.apply(Global.scala:77=
6)
[INFO] at scala.collection.Iterator$class.foreach(Iterator.scala:627)
[INFO] at =
scala.collection.Iterator$$anon$19.foreach(Iterator.scala:363)
[INFO] at scala.tools.nsc.Global$Run.compileSources(Global.scala:776)
[INFO] at scala.tools.nsc.Global$Run.compile(Global.scala:815)

It seems as if the phase was being set to NoPhase. Using other phases or =
the tryToSet method does not fail but when compiling it does not stop =
after the given phase and it finish in the terminal phase which is a =
problem for this code because the annotations are erased.

This was like that in 2.8.Beta1, I upgraded today to 2.8.RC1 and it has =
the same problem.

Using the option -Ystop in the compiler (through Maven) results in the =
same assertion error:

[ERROR] Caused by: java.lang.AssertionError: assertion failed
[INFO] at scala.Predef$.assert(Predef.scala:79)
[INFO] at =
scala.tools.nsc.symtab.SymbolTable.phase_$eq(SymbolTable.scala:70)
[INFO] at =
scala.tools.nsc.symtab.SymbolTable.atPhase(SymbolTable.scala:103)
[INFO] at =
scala.tools.nsc.Global$Run$$anonfun$scala$tools$nsc$Global$Run$$resetPacka=
geClass$1.apply(Global.scala:869)
[INFO] at =
scala.tools.nsc.Global$Run$$anonfun$scala$tools$nsc$Global$Run$$resetPacka=
geClass$1.apply(Global.scala:869)
[INFO] at =
scala.tools.nsc.symtab.SymbolTable.atPhase(SymbolTable.scala:104)
[INFO] at =
scala.tools.nsc.Global$Run.scala$tools$nsc$Global$Run$$resetPackageClass(G=
lobal.scala:868)
[INFO] at =
scala.tools.nsc.Global$Run$$anonfun$compileSources$3.apply(Global.scala:77=
6)
[INFO] at =
scala.tools.nsc.Global$Run$$anonfun$compileSources$3.apply(Global.scala:77=
6)
[INFO] at scala.collection.Iterator$class.foreach(Iterator.scala:627)
[INFO] at =
scala.collection.Iterator$$anon$19.foreach(Iterator.scala:363)
[INFO] at scala.tools.nsc.Global$Run.compileSources(Global.scala:776)
[INFO] at scala.tools.nsc.Global$Run.compile(Global.scala:815)
[INFO] at scala.tools.nsc.Main$.process(Main.scala:109)
[INFO] at scala.tools.nsc.Main$.main(Main.scala:123)
[INFO] at scala.tools.nsc.Main.main(Main.scala)

regards,

Oscar=