Edit unused imports

Author: som-snytt

compiler/src/dotty/tools/MainGenericRunner.scala

@@ -3,17 +3,16 @@ package dotty.tools
 
 import scala.annotation.tailrec
 import scala.io.Source
-import scala.util.{ Try, Success, Failure }
+import scala.util.Try
 import java.io.File
 import java.lang.Thread
 import scala.annotation.internal.sharable
 import dotty.tools.dotc.util.ClasspathFromClassloader
 import dotty.tools.runner.ObjectRunner
 import dotty.tools.dotc.config.Properties.envOrNone
-import java.util.jar._
 import dotty.tools.io.Jar
 import dotty.tools.runner.ScalaClassLoader
-import java.nio.file.{Files, Paths, Path}
+import java.nio.file.Paths
 import dotty.tools.dotc.config.CommandLineParser
 import dotty.tools.scripting.StringDriver
 

compiler/src/dotty/tools/backend/WorklistAlgorithm.scala

@@ -1,8 +1,6 @@
 package dotty.tools
 package backend
 
-import scala.collection.mutable
-
 /**
  * Simple implementation of a worklist algorithm. A processing
  * function is applied repeatedly to the first element in the

compiler/src/dotty/tools/backend/jvm/BCodeAsmCommon.scala

@@ -11,7 +11,7 @@ import dotty.tools.dotc.report
  * the compiler cake (Global).
  */
 final class BCodeAsmCommon[I <: DottyBackendInterface](val interface: I) {
-  import interface.{_, given}
+  import interface.given
   import DottyBackendInterface.symExtensions
 
   /**

compiler/src/dotty/tools/backend/jvm/BCodeBodyBuilder.scala

@@ -6,13 +6,12 @@ import scala.annotation.switch
 import scala.collection.mutable.SortedMap
 
 import scala.tools.asm
-import scala.tools.asm.{Handle, Label, Opcodes}
+import scala.tools.asm.{Handle, Opcodes}
 import BCodeHelpers.InvokeStyle
 
 import dotty.tools.dotc.ast.tpd
 import dotty.tools.dotc.CompilationUnit
 import dotty.tools.dotc.core.Constants._
-import dotty.tools.dotc.core.Decorators._
 import dotty.tools.dotc.core.Flags.{Label => LabelFlag, _}
 import dotty.tools.dotc.core.Types._
 import dotty.tools.dotc.core.StdNames.{nme, str}
@@ -915,7 +914,6 @@ trait BCodeBodyBuilder extends BCodeSkelBuilder {
         var default:  asm.Label       = null
         var indirectBlocks: List[(asm.Label, Tree)] = Nil
 
-        import scala.collection.mutable
 
         // Cases grouped by their hashCode
         val casesByHash = SortedMap.empty[Int, List[(String, Either[asm.Label, Tree])]]

compiler/src/dotty/tools/backend/jvm/BCodeHelpers.scala

@@ -62,7 +62,6 @@ trait BCodeHelpers extends BCodeIdiomatic with BytecodeWriters {
   @threadUnsafe lazy val JavaAnnotationClass: ClassSymbol = requiredClass("java.lang.annotation.Annotation")
 
   val bCodeAsmCommon: BCodeAsmCommon[int.type] = new BCodeAsmCommon(int)
-  import bCodeAsmCommon._
 
   /*
    * must-single-thread
@@ -479,7 +478,7 @@ trait BCodeHelpers extends BCodeIdiomatic with BytecodeWriters {
   } // end of trait BCAnnotGen
 
   trait BCJGenSigGen {
-    import int.{_, given}
+    import int.given
 
     def getCurrentCUnit(): CompilationUnit
 

compiler/src/dotty/tools/backend/jvm/BCodeIdiomatic.scala

@@ -4,7 +4,6 @@ package jvm
 
 import scala.tools.asm
 import scala.annotation.switch
-import scala.collection.mutable
 import Primitives.{NE, EQ, TestOp, ArithmeticOp}
 import scala.tools.asm.tree.MethodInsnNode
 import dotty.tools.dotc.report

compiler/src/dotty/tools/backend/jvm/BCodeSkelBuilder.scala

@@ -3,16 +3,12 @@ package backend
 package jvm
 
 import scala.collection.{ mutable, immutable }
-import scala.annotation.switch
 
 import scala.tools.asm
-import scala.tools.asm.util.{TraceMethodVisitor, ASMifier}
-import java.io.PrintWriter
 
 import dotty.tools.dotc.ast.tpd
 import dotty.tools.dotc.ast.TreeTypeMap
 import dotty.tools.dotc.CompilationUnit
-import dotty.tools.dotc.core.Annotations.Annotation
 import dotty.tools.dotc.core.Decorators._
 import dotty.tools.dotc.core.Flags._
 import dotty.tools.dotc.core.StdNames._

compiler/src/dotty/tools/backend/jvm/BCodeSyncAndTry.scala

@@ -9,7 +9,6 @@ import dotty.tools.dotc.CompilationUnit
 import dotty.tools.dotc.core.StdNames.nme
 import dotty.tools.dotc.core.Symbols._
 import dotty.tools.dotc.ast.tpd
-import dotty.tools.dotc.ast.tpd.TreeOps
 
 /*
  *
@@ -18,7 +17,7 @@ import dotty.tools.dotc.ast.tpd.TreeOps
  *
  */
 trait BCodeSyncAndTry extends BCodeBodyBuilder {
-  import int.{_, given}
+  import int.given
   import tpd._
   import bTypes._
   import coreBTypes._

compiler/src/dotty/tools/backend/jvm/BTypes.scala

@@ -15,7 +15,7 @@ import scala.tools.asm
 abstract class BTypes {
 
   val int: DottyBackendInterface
-  import int.{_, given}
+  import int.given
   /**
    * A map from internal names to ClassBTypes. Every ClassBType is added to this map on its
    * construction.

compiler/src/dotty/tools/backend/jvm/BytecodeWriters.scala

@@ -2,14 +2,11 @@ package dotty.tools
 package backend
 package jvm
 
-import java.io.{ DataOutputStream, FileOutputStream, IOException, OutputStream, File => JFile }
+import java.io.{ DataOutputStream, FileOutputStream, IOException, File as JFile }
 import java.nio.channels.ClosedByInterruptException
-import java.nio.file.Files
 import dotty.tools.io._
 import dotty.tools.dotc.report
 
-import java.util.jar.Attributes.Name
-import scala.language.postfixOps
 
 /** Can't output a file due to the state of the file system. */
 class FileConflictException(msg: String, val file: AbstractFile) extends IOException(msg)