Suppress apply insertion warnings in bootstrap

Author: liufengyun

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

@@ -198,7 +198,7 @@ final class JrtClassPath(fs: java.nio.file.FileSystem) extends ClassPath with No
 }
 
 case class DirectoryClassPath(dir: JFile) extends JFileDirectoryLookup[ClassFileEntryImpl] with NoSourcePaths {
-  override def findClass(className: String): Option[ClassRepresentation] = findClassFile(className) map ClassFileEntryImpl
+  override def findClass(className: String): Option[ClassRepresentation] = findClassFile(className) map ClassFileEntryImpl.apply
 
   def findClassFile(className: String): Option[AbstractFile] = {
     val relativePath = FileUtils.dirPath(className)
@@ -223,7 +223,7 @@ case class DirectorySourcePath(dir: JFile) extends JFileDirectoryLookup[SourceFi
   protected def createFileEntry(file: AbstractFile): SourceFileEntryImpl = SourceFileEntryImpl(file)
   protected def isMatchingFile(f: JFile): Boolean = endsScalaOrJava(f.getName)
 
-  override def findClass(className: String): Option[ClassRepresentation] = findSourceFile(className) map SourceFileEntryImpl
+  override def findClass(className: String): Option[ClassRepresentation] = findSourceFile(className) map SourceFileEntryImpl.apply
 
   private def findSourceFile(className: String): Option[AbstractFile] = {
     val relativePath = FileUtils.dirPath(className)

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

@@ -38,7 +38,7 @@ case class VirtualDirectoryClassPath(dir: VirtualDirectory) extends ClassPath wi
   def asURLs: Seq[URL] = Seq(new URL(dir.name))
   def asClassPathStrings: Seq[String] = Seq(dir.path)
 
-  override def findClass(className: String): Option[ClassRepresentation] = findClassFile(className) map ClassFileEntryImpl
+  override def findClass(className: String): Option[ClassRepresentation] = findClassFile(className) map ClassFileEntryImpl.apply
 
   def findClassFile(className: String): Option[AbstractFile] = {
     val relativePath = FileUtils.dirPath(className) + ".class"

doc-tool/src/dotty/tools/dottydoc/util/MemberLookup.scala

@@ -81,7 +81,7 @@ trait MemberLookup {
   ): EntityLink = {
     val link =
       lookup(Some(entity), packages, query)
-      .map(LinkToEntity)
+      .map(LinkToEntity.apply)
       .getOrElse(Tooltip(query))
 
     EntityLink(title, link)