WIP

Author: retronym

src/compiler/scala/tools/nsc/classpath/DirectoryClassPath.scala

@@ -18,7 +18,7 @@ import java.nio.file.{FileSystems, Files}
 import java.util
 
 import scala.reflect.io.{AbstractFile, PlainFile, PlainNioFile}
-import scala.tools.nsc.util.{ClassPath, ClassRepresentation}
+import scala.tools.nsc.util.{ClassPath, ClassRepresentation, EfficientClassPath, EfficientClassPathCallBack}
 import FileUtils._
 import scala.collection.JavaConverters._
 import scala.reflect.internal.JDK9Reflectors
@@ -32,7 +32,7 @@ import scala.tools.nsc.classpath.PackageNameUtils.{packageContains, separatePkgA
  * when we have a name of a package.
  * It abstracts over the file representation to work with both JFile and AbstractFile.
  */
-trait DirectoryLookup[FileEntryType <: ClassRepresentation] extends ClassPath {
+trait DirectoryLookup[FileEntryType <: ClassRepresentation] extends EfficientClassPath {
   type F
 
   val dir: F
@@ -75,6 +75,19 @@ trait DirectoryLookup[FileEntryType <: ClassRepresentation] extends ClassPath {
     files.map(f => createFileEntry(toAbstractFile(f)))
   }
 
+  override private[nsc] def list(inPackage: PackageName, callback: EfficientClassPathCallBack): Unit = {
+    val dirForPackage = getDirectory(inPackage)
+    dirForPackage match {
+      case None =>
+      case Some(directory) =>
+        for (file <- listChildren(directory)) {
+          if (isPackage(file))
+            callback.packageEntry(PackageEntryImpl(inPackage.entryName(getName(file))))
+          else if (isMatchingFile(file))
+            callback.classesAndSources(createFileEntry(toAbstractFile(file)))
+        }
+    }
+  }
   private[nsc] def list(inPackage: PackageName): ClassPathEntries = {
     val dirForPackage = getDirectory(inPackage)
     val files: Array[F] = dirForPackage match {