Remove unused imports

Using dotty-compiler/scalafix RemoveUnused

Author: OlivierBlanvillain

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

@@ -5,30 +5,15 @@ import dotty.tools.dotc.core.Contexts.Context
 import dotty.tools.dotc.core.Types
 import dotty.tools.dotc.transform.MegaPhase._
 import dotty.tools.dotc.ast.tpd
-import dotty.tools.dotc
-import dotty.tools.dotc.core.Flags.FlagSet
-import dotty.tools.dotc.transform.Erasure
-import dotty.tools.dotc.transform.SymUtils._
-import java.io.{File => JFile}
+import java.io.{File => _}
 
-import scala.collection.generic.Clearable
-import scala.collection.mutable
-import scala.reflect.ClassTag
-import dotty.tools.io.{Directory, PlainDirectory, AbstractFile}
-import scala.tools.asm.{ClassVisitor, FieldVisitor, MethodVisitor}
-import scala.tools.nsc.backend.jvm.{BCodeHelpers, BackendInterface}
 import dotty.tools.dotc.core._
-import Periods._
 import SymDenotations._
 import Contexts._
 import Types._
 import Symbols._
-import Denotations._
-import Phases._
-import java.lang.AssertionError
 import dotty.tools.dotc.util.Positions.Position
 import Decorators._
-import tpd._
 import StdNames.nme
 
 /**
@@ -56,7 +41,6 @@ object CollectEntryPoints{
   }
 
   def isJavaEntryPoint(sym: Symbol)(implicit ctx: Context): Boolean = {
-    import Types.MethodType
     val d = ctx.definitions
     val StringType = d.StringType
     // The given class has a main method.

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

@@ -1,7 +1,6 @@
 package dotty.tools.backend.jvm
 
 import dotty.tools.dotc.ast.tpd
-import dotty.tools.dotc.ast.Trees._
 import dotty.tools.dotc.core.Contexts.Context
 import dotty.tools.dotc.core.Symbols._
 import dotty.tools.dotc.core.Flags.Trait

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

@@ -6,37 +6,29 @@ import dotty.tools.dotc
 import dotty.tools.dotc.core.Flags.FlagSet
 import dotty.tools.dotc.transform.{Erasure, GenericSignatures}
 import dotty.tools.dotc.transform.SymUtils._
-import java.io.{File => JFile}
+import java.io.{File => _}
 
 import scala.collection.generic.Clearable
 import scala.collection.mutable
 import scala.reflect.ClassTag
 import scala.reflect.internal.util.WeakHashSet
-import dotty.tools.io.{AbstractFile, Directory, PlainDirectory}
-import scala.tools.asm.{AnnotationVisitor, ClassVisitor, FieldVisitor, MethodVisitor}
+import dotty.tools.io.AbstractFile
+import scala.tools.asm.AnnotationVisitor
 import scala.tools.nsc.backend.jvm.{BCodeHelpers, BackendInterface}
 import dotty.tools.dotc.core._
-import Periods._
-import SymDenotations._
 import Contexts._
 import Types._
 import Symbols._
-import Denotations._
 import Phases._
-import java.lang.AssertionError
 
-import dotty.tools.dotc.util.{DotClass, Positions}
+import dotty.tools.dotc.util.Positions
 import Decorators._
 import tpd._
 
 import scala.tools.asm
 import StdNames.{nme, str}
-import NameOps._
 import NameKinds.{DefaultGetterName, ExpandedName}
-import dotty.tools.dotc.core
-import dotty.tools.dotc.core.Names.TypeName
 
-import scala.annotation.tailrec
 
 class DottyBackendInterface(outputDirectory: AbstractFile, val superCallsMap: Map[Symbol, Set[ClassSymbol]])(implicit ctx: Context) extends BackendInterface{
   import Symbols.{toDenot, toClassDenot}

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

@@ -20,13 +20,12 @@ import Decorators._
 
 import java.io.DataOutputStream
 
-import dotty.tools.io.Directory
 
 import scala.tools.asm
 import scala.tools.asm.tree._
 import tpd._
 import StdNames._
-import dotty.tools.dotc.core.tasty.{TastyBuffer, TastyHeaderUnpickler, TastyPickler}
+import dotty.tools.dotc.core.tasty.{TastyBuffer, TastyHeaderUnpickler}
 import dotty.tools.io._
 
 class GenBCode extends Phase {

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

@@ -6,7 +6,6 @@ import dotty.tools.dotc.core.Flags._
 import dotty.tools.dotc.core.Symbols._
 import dotty.tools.dotc.transform.MegaPhase._
 
-import scala.collection.mutable
 
 /**
  * Verifies that each Label DefDef has only a single address to jump back and

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

@@ -14,7 +14,7 @@ import Names.TermName, StdNames._
 import Types.{JavaArrayType, UnspecifiedErrorType, Type}
 import Symbols.{Symbol, NoSymbol}
 
-import scala.collection.{ mutable, immutable }
+import scala.collection.immutable
 
 
 /** Scala primitive operations are represented as methods in `Any` and

compiler/src/dotty/tools/dotc/Compiler.scala

@@ -3,17 +3,9 @@ package dotc
 
 import core._
 import Contexts._
-import Periods._
-import Symbols._
-import Types._
-import Scopes._
-import typer.{FrontEnd, ImportInfo, RefChecks, Typer}
-import reporting.{ConsoleReporter, Reporter}
+import typer.{FrontEnd, RefChecks}
 import Phases.Phase
 import transform._
-import util.FreshNameCreator
-import core.DenotTransformers.DenotTransformer
-import core.Denotations.SingleDenotation
 import dotty.tools.backend.jvm.{CollectSuperCalls, GenBCode, LabelDefs}
 import dotty.tools.dotc.transform.localopt.StringInterpolatorOpt
 

compiler/src/dotty/tools/dotc/Driver.scala

@@ -5,7 +5,6 @@ import config.CompilerCommand
 import core.Comments.{ContextDoc, ContextDocstrings}
 import core.Contexts.{Context, ContextBase}
 import core.Mode
-import util.DotClass
 import reporting._
 import scala.util.control.NonFatal
 import fromtasty.TASTYCompiler

compiler/src/dotty/tools/dotc/Run.scala

@@ -5,17 +5,15 @@ import core._
 import Contexts._
 import Periods._
 import Symbols._
-import Phases._
 import Types._
 import Scopes._
-import typer.{FrontEnd, ImportInfo, RefChecks, Typer}
+import typer.{ImportInfo, Typer}
 import Decorators._
 import io.{AbstractFile, PlainFile}
 
 import scala.io.Codec
 import util.{Set => _, _}
 import reporting.Reporter
-import transform.TreeChecker
 import rewrites.Rewrites
 import java.io.{BufferedWriter, OutputStreamWriter}
 
@@ -26,7 +24,6 @@ import parsing.JavaParsers.JavaParser
 import typer.ImplicitRunInfo
 import collection.mutable
 
-import scala.annotation.tailrec
 import dotty.tools.io.VirtualFile
 
 import scala.util.control.NonFatal

compiler/src/dotty/tools/dotc/ast/Desugar.scala

@@ -4,10 +4,9 @@ package ast
 
 import core._
 import util.Positions._, Types._, Contexts._, Constants._, Names._, NameOps._, Flags._
-import SymDenotations._, Symbols._, StdNames._, Annotations._, Trees._
+import Symbols._, StdNames._, Trees._
 import Decorators._, transform.SymUtils._
 import NameKinds.{UniqueName, EvidenceParamName, DefaultGetterName}
-import language.higherKinds
 import typer.FrontEnd
 import collection.mutable.ListBuffer
 import reporting.diagnostic.messages._

compiler/src/dotty/tools/dotc/ast/DesugarEnums.scala

@@ -4,9 +4,8 @@ package ast
 
 import core._
 import util.Positions._, Types._, Contexts._, Constants._, Names._, NameOps._, Flags._
-import SymDenotations._, Symbols._, StdNames._, Annotations._, Trees._
+import Symbols._, StdNames._, Trees._
 import Decorators._
-import collection.mutable.ListBuffer
 import util.Property
 import typer.ErrorReporting._
 
@@ -15,7 +14,6 @@ import scala.annotation.internal.sharable
 /** Helper methods to desugar enums */
 object DesugarEnums {
   import untpd._
-  import desugar.DerivedFromParamTree
 
   @sharable object CaseKind extends Enumeration {
     val Simple, Object, Class = Value

compiler/src/dotty/tools/dotc/ast/Positioned.scala

@@ -2,7 +2,6 @@ package dotty.tools.dotc
 package ast
 
 import util.Positions._
-import util.DotClass
 import core.Contexts.Context
 import core.Decorators._
 import core.Flags.JavaDefined

compiler/src/dotty/tools/dotc/ast/TreeInfo.scala

@@ -4,15 +4,13 @@ package ast
 
 import core._
 import Flags._, Trees._, Types._, Contexts._
-import Names._, StdNames._, NameOps._, Decorators._, Symbols._
-import util.HashSet
+import Names._, StdNames._, NameOps._, Symbols._
 import typer.ConstFold
 import reporting.trace
 
 import scala.annotation.tailrec
 
 trait TreeInfo[T >: Untyped <: Type] { self: Trees.Instance[T] =>
-  import TreeInfo._
 
   // Note: the <: Type constraint looks necessary (and is needed to make the file compile in dotc).
   // But Scalac accepts the program happily without it. Need to find out why.
@@ -287,7 +285,6 @@ trait TreeInfo[T >: Untyped <: Type] { self: Trees.Instance[T] =>
 }
 
 trait UntypedTreeInfo extends TreeInfo[Untyped] { self: Trees.Instance[Untyped] =>
-  import TreeInfo._
   import untpd._
 
   /** The underlying tree when stripping any TypedSplice or Parens nodes */

compiler/src/dotty/tools/dotc/ast/TreeTypeMap.scala

@@ -3,9 +3,9 @@ package dotc
 package ast
 
 import core._
-import Types._, Contexts._, Constants._, Names._, Flags._
-import SymDenotations._, Symbols._, Annotations._, Trees._, Symbols._
-import Denotations._, Decorators._
+import Types._, Contexts._
+import Symbols._, Annotations._, Trees._, Symbols._
+import Decorators._
 import dotty.tools.dotc.transform.SymUtils._
 import core.tasty.TreePickler.Hole
 

compiler/src/dotty/tools/dotc/ast/Trees.scala

@@ -5,18 +5,13 @@ package ast
 import core._
 import Types._, Names._, NameOps._, Flags._, util.Positions._, Contexts._, Constants._
 import SymDenotations._, Symbols._, Denotations._, StdNames._, Comments._
-import annotation.tailrec
 import language.higherKinds
-import collection.IndexedSeqOptimized
-import collection.immutable.IndexedSeq
 import collection.mutable.ListBuffer
-import parsing.Tokens.Token
 import printing.Printer
-import util.{Stats, Attachment, Property, DotClass}
+import util.{Stats, Attachment, Property}
 import config.Config
 import annotation.internal.sharable
 import annotation.unchecked.uncheckedVariance
-import language.implicitConversions
 
 object Trees {
 

compiler/src/dotty/tools/dotc/ast/tpd.scala

@@ -8,11 +8,10 @@ import transform.SymUtils._
 import transform.TypeUtils._
 import core._
 import util.Positions._, Types._, Contexts._, Constants._, Names._, Flags._, NameOps._
-import SymDenotations._, Symbols._, StdNames._, Annotations._, Trees._, Symbols._
-import Denotations._, Decorators._, DenotTransformers._
+import Symbols._, StdNames._, Annotations._, Trees._, Symbols._
+import Decorators._, DenotTransformers._
 import collection.mutable
 import util.{Property, SourceFile, NoSource}
-import typer.ErrorReporting._
 import NameKinds.{TempResultName, OuterSelectName}
 
 import scala.annotation.tailrec

compiler/src/dotty/tools/dotc/ast/untpd.scala

@@ -3,13 +3,10 @@ package dotc
 package ast
 
 import core._
-import util.Positions._, Types._, Contexts._, Constants._, Names._, NameOps._, Flags._
-import Denotations._, SymDenotations._, Symbols._, StdNames._, Annotations._, Trees._
-import Decorators._
+import Types._, Contexts._, Constants._, Names._, Flags._
+import Symbols._, StdNames._, Trees._
 import util.Property
 import language.higherKinds
-import collection.mutable.ListBuffer
-import reflect.ClassTag
 
 import scala.annotation.internal.sharable
 

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

@@ -5,7 +5,6 @@ package dotty.tools
 package dotc.classpath
 
 import java.net.URL
-import scala.annotation.tailrec
 import scala.collection.mutable.ArrayBuffer
 import dotty.tools.io.{ AbstractFile, ClassPath, ClassRepresentation }
 

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

@@ -4,7 +4,6 @@
 package dotty.tools.dotc.classpath
 
 import dotty.tools.io.{AbstractFile, VirtualDirectory}
-import dotty.tools.dotc.config.Settings
 import FileUtils.AbstractFileOps
 import dotty.tools.io.ClassPath
 import dotty.tools.dotc.core.Contexts.Context

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

@@ -4,11 +4,8 @@
 package dotty.tools.dotc.classpath
 
 import java.io.{File => JFile}
-import java.net.{URI, URL}
-import java.nio.file.{FileSystems, Files, SimpleFileVisitor}
-import java.util.function.IntFunction
-import java.util
-import java.util.Comparator
+import java.net.URL
+import java.nio.file.{FileSystems, Files}
 
 import dotty.tools.io.{AbstractFile, PlainFile, ClassPath, ClassRepresentation}
 import FileUtils._

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

@@ -1,7 +1,7 @@
 package dotty.tools.dotc.classpath
 
 import dotty.tools.io.ClassRepresentation
-import dotty.tools.io.{AbstractFile, Path, PlainFile, VirtualDirectory}
+import dotty.tools.io.{AbstractFile, VirtualDirectory}
 import FileUtils._
 import java.net.URL
 

compiler/src/dotty/tools/dotc/config/CompilerCommand.scala

@@ -5,7 +5,6 @@ import java.nio.file.{Files, Paths}
 
 import Settings._
 import core.Contexts._
-import util.DotClass
 import Properties._
 
 import scala.collection.JavaConverters._

compiler/src/dotty/tools/dotc/config/JavaPlatform.scala

@@ -5,8 +5,8 @@ package config
 import io._
 import classpath.AggregateClassPath
 import core._
-import Symbols._, Types._, Contexts._, Denotations._, SymDenotations._, StdNames._, Names._
-import Flags._, Scopes._, Decorators._, NameOps._, util.Positions._
+import Symbols._, Types._, Contexts._, SymDenotations._, StdNames._
+import Flags._
 import transform.ExplicitOuter, transform.SymUtils._
 
 class JavaPlatform extends Platform {

compiler/src/dotty/tools/dotc/config/PathResolver.scala

@@ -2,11 +2,10 @@ package dotty.tools
 package dotc
 package config
 
-import java.net.{ URL, MalformedURLException }
 import WrappedProperties.AccessControl
-import io.{ ClassPath, File, Directory, Path, AbstractFile }
+import io.{ ClassPath, Directory, Path }
 import classpath.{AggregateClassPath, ClassPathFactory, JrtClassPath }
-import ClassPath.{ JavaContext, join, split }
+import ClassPath.split
 import PartialFunction.condOpt
 import scala.language.postfixOps
 import core.Contexts._
@@ -159,7 +158,7 @@ object PathResolver {
     }
   }
 }
-import PathResolver.{ Defaults, Environment, firstNonEmpty, ppcp }
+import PathResolver.{ Defaults, ppcp }
 
 class PathResolver(implicit ctx: Context) {
   import ctx.base.settings

compiler/src/dotty/tools/dotc/config/Properties.scala

@@ -4,7 +4,7 @@ package config
 
 import scala.annotation.internal.sharable
 
-import java.io.{ IOException, PrintWriter }
+import java.io.IOException
 import java.util.jar.Attributes.{ Name => AttributeName }
 
 /** Loads `library.properties` from the jar. */