More fix for window path

Author: liufengyun

compiler/src/dotty/tools/dotc/classpath/DirectoryClassPath.scala

@@ -174,7 +174,7 @@ final class JrtClassPath(fs: java.nio.file.FileSystem) extends ClassPath with No
     if (inPackage == "") Nil
     else {
       packageToModuleBases.getOrElse(inPackage, Nil).flatMap(x =>
-        Files.list(x.resolve(inPackage.replace('.', '/'))).iterator().asScala.filter(_.getFileName.toString.endsWith(".class"))).map(x =>
+        Files.list(x.resolve(FileUtils.dirPath(inPackage))).iterator().asScala.filter(_.getFileName.toString.endsWith(".class"))).map(x =>
         ClassFileEntryImpl(new PlainFile(new dotty.tools.io.File(x)))).toVector
     }
   }
@@ -193,7 +193,7 @@ final class JrtClassPath(fs: java.nio.file.FileSystem) extends ClassPath with No
     else {
       val inPackage = packageOf(className)
       packageToModuleBases.getOrElse(inPackage, Nil).iterator.flatMap{x =>
-        val file = x.resolve(className.replace('.', '/') + ".class")
+        val file = x.resolve(FileUtils.dirPath(className) + ".class")
         if (Files.exists(file)) new PlainFile(new dotty.tools.io.File(file)) :: Nil else Nil
       }.take(1).toList.headOption
     }

compiler/src/dotty/tools/dotc/classpath/FileUtils.scala

@@ -43,7 +43,7 @@ object FileUtils {
     else throw new FatalError("Unexpected source file ending: " + fileName)
   }
 
-  def dirPath(forPackage: String): String = forPackage.replace('.', '/')
+  def dirPath(forPackage: String): String = forPackage.replace('.', JFile.separatorChar)
 
   def endsClass(fileName: String): Boolean =
     fileName.length > 6 && fileName.substring(fileName.length - 6) == ".class"