Merge pull request #549 from lukaszwawrzyk/warnings-cleanup

Some warnings cleanup

Author: jvican

internal/compiler-bridge/src/main/scala/xsbt/InteractiveConsoleInterface.scala

@@ -40,9 +40,7 @@ class InteractiveConsoleInterface(
   val poutWriter: PrintWriter = new PrintWriter(outWriter)
 
   val interpreter: IMain =
-    new IMain(compilerSettings, replReporter(compilerSettings, new PrintWriter(outWriter))) {
-      def lastReq: Request = prevRequestList.last
-    }
+    new IMain(compilerSettings, replReporter(compilerSettings, new PrintWriter(outWriter)))
 
   def interpret(line: String, synthetic: Boolean): InteractiveConsoleResponse = {
     clearBuffer()

internal/compiler-bridge/src/main/scala_2.13/xsbt/ConsoleInterface.scala

@@ -10,7 +10,6 @@ package xsbt
 import xsbti.Logger
 import scala.tools.nsc.interpreter.IMain
 import scala.tools.nsc.interpreter.shell.{ ILoop, ShellConfig, ReplReporterImpl }
-import scala.tools.nsc.reporters.Reporter
 import scala.tools.nsc.{ GenericRunnerCommand, Settings }
 
 class ConsoleInterface {
@@ -52,8 +51,12 @@ class ConsoleInterface {
         } else
           super.createInterpreter(interpreterSettings)
 
-        for ((id, value) <- bindNames zip bindValues)
-          intp.beQuietDuring(intp.bind(id, value.asInstanceOf[AnyRef].getClass.getName, value))
+        for ((id, value) <- bindNames zip bindValues) {
+          intp.beQuietDuring {
+            intp.bind(id, value.asInstanceOf[AnyRef].getClass.getName, value)
+            ()
+          }
+        }
 
         if (!initialCommands.isEmpty)
           intp.interpret(initialCommands)
@@ -69,6 +72,7 @@ class ConsoleInterface {
     }
 
     loop.run(compilerSettings)
+    ()
   }
 }
 

internal/zinc-benchmarks/src/main/scala/xsbt/ZincBenchmark.scala

@@ -14,7 +14,7 @@ import sbt.internal.util.ConsoleLogger
 import sbt.io.{ IO, RichFile }
 import xsbt.ZincBenchmark.CompilationInfo
 import xsbti._
-import xsbti.compile.{ IncOptions, SingleOutput }
+import xsbti.compile.SingleOutput
 
 import scala.util.Try
 
@@ -352,6 +352,7 @@ case class BenchmarkProject(
     gitClient.right.flatMap(Git.checkout(_, hash)).right.map(_ => tempDir)
   }
 
+  // Left for compatibility
   import ZincBenchmark.TryEnrich
   def writeBuildInfo(projectDir: File, sharedDir: File): WriteBuildInfo = {
     def persistBuildInfo(subproject: String, stateFile: File): Result[Unit] = {

internal/zinc-classpath/src/main/scala/sbt/internal/inc/classpath/ClasspathUtilities.scala

@@ -118,10 +118,10 @@ object ClasspathUtilities {
 
   /** Returns all entries in 'classpath' that correspond to a compiler plugin.*/
   private[sbt] def compilerPlugins(classpath: Seq[File], isDotty: Boolean): Iterable[File] = {
-    import collection.JavaConversions._
+    import collection.JavaConverters._
     val loader = new URLClassLoader(Path.toURLs(classpath))
     val metaFile = if (isDotty) "plugin.properties" else "scalac-plugin.xml"
-    loader.getResources(metaFile).toList.flatMap(asFile(true))
+    loader.getResources(metaFile).asScala.toList.flatMap(asFile(true))
   }
 
   /** Converts the given URL to a File.  If the URL is for an entry in a jar, the File for the jar is returned. */

internal/zinc-compile-core/src/main/scala/sbt/internal/inc/FilteredReporter.scala

@@ -88,6 +88,7 @@ class FilteredReporter(
       val transformedPos: Position = positionMapper(position)
       val problem = InterfaceUtil.problem(category, transformedPos, message, severity)
       allProblems += problem
+      ()
     }
   }
 }

internal/zinc-compile-core/src/main/scala/sbt/internal/inc/ReporterManager.scala

@@ -16,8 +16,6 @@ import sbt.util.LogExchange
 import sbt.util.{ Level => SbtLevel }
 import xsbti.{ Position, Reporter, ReporterConfig }
 
-import scala.util.matching.Regex
-
 object ReporterManager {
   import java.util.concurrent.atomic.AtomicInteger
   private val idGenerator: AtomicInteger = new AtomicInteger
@@ -75,8 +73,6 @@ object ReporterManager {
         case _                      => new LoggedReporter(maxErrors, logger, posMapper)
       }
     } else {
-      implicit def scalaPatterns(patterns: Array[java.util.regex.Pattern]): Array[Regex] =
-        patterns.map(_.pattern().r)
       val fileFilters = config.fileFilters().map(_.toScala)
       val msgFilters = config.msgFilters().map(_.toScala)
       logger match {

internal/zinc-compile-core/src/main/scala/sbt/internal/inc/javac/JavacProcessLogger.scala

@@ -27,8 +27,8 @@ import scala.sys.process.ProcessLogger
  * @param cwd The current working directory of the Javac process, used when parsing Filenames.
  */
 final class JavacLogger(log: sbt.util.Logger, reporter: Reporter, cwd: File) extends ProcessLogger {
-  private var out: ListBuffer[String] = new ListBuffer()
-  private var err: ListBuffer[String] = new ListBuffer()
+  private val out: ListBuffer[String] = new ListBuffer()
+  private val err: ListBuffer[String] = new ListBuffer()
 
   def out(s: => String): Unit =
     synchronized {

internal/zinc-compile-core/src/test/scala/sbt/internal/inc/javac/JavacProcessLoggerSpec.scala

@@ -34,6 +34,7 @@ class JavaProcessLoggerSpec extends UnitSpec {
 
     errorLogger.messages shouldBe Map.empty
     reporter.problems.length shouldBe 2
+    ()
   }
 
   def logSeparateSemanticErrors(): Unit = {
@@ -56,6 +57,7 @@ class JavaProcessLoggerSpec extends UnitSpec {
 
     errorLogger.messages shouldBe Map.empty
     reporter.problems.length shouldBe 2
+    ()
   }
 
   def logUnparsableErrors(): Unit = {
@@ -71,5 +73,6 @@ class JavaProcessLoggerSpec extends UnitSpec {
       .messages(Level.Warn)(0)
       .contains("javadoc: error - invalid flag: -target") shouldBe true
     errorLogger.messages(Level.Warn)(1).contains("javadoc exited with exit code -1") shouldBe true
+    ()
   }
 }

internal/zinc-core/src/main/scala/sbt/internal/inc/APIDiff.scala

@@ -72,7 +72,7 @@ private[inc] class APIDiff {
     private final val DELETION_COLOR = ANSI_RED
     private final val ADDITION_COLOR = ANSI_GREEN
 
-    @tailrec private def splitTokens(str: String, acc: List[String] = Nil): List[String] = {
+    @tailrec private def splitTokens(str: String, acc: List[String]): List[String] = {
       if (str == "") {
         acc.reverse
       } else {
@@ -165,8 +165,10 @@ private[inc] class APIDiff {
       def build(x: Array[String], y: Array[String], builder: mutable.ArrayBuilder[Patch]): Unit = {
         if (x.isEmpty) {
           builder += Inserted(y.mkString)
+          ()
         } else if (y.isEmpty) {
           builder += Deleted(x.mkString)
+          ()
         } else if (x.length == 1 || y.length == 1) {
           needlemanWunsch(x, y, builder)
         } else {
@@ -251,6 +253,7 @@ private[inc] class APIDiff {
         }
       }
       builder ++= alignment
+      ()
     }
 
   }

internal/zinc-core/src/main/scala/sbt/internal/inc/MemberRefInvalidator.scala

@@ -59,7 +59,7 @@ private[inc] class MemberRefInvalidator(log: Logger, logRecompileOnMacro: Boolea
       new InvalidateUnconditionally(memberRef)
     case NamesChange(_, modifiedNames) if modifiedNames.in(UseScope.Implicit).nonEmpty =>
       new InvalidateUnconditionally(memberRef)
-    case NamesChange(modifiedClass, modifiedNames) =>
+    case NamesChange(_, modifiedNames) =>
       new NameHashFilteredInvalidator(usedNames, memberRef, modifiedNames, isScalaClass)
   }
 
@@ -77,6 +77,7 @@ private[inc] class MemberRefInvalidator(log: Logger, logRecompileOnMacro: Boolea
       }
   }
 
+  // Left for compatibility
   private class InvalidateDueToMacroDefinition(memberRef: Relation[String, String])
       extends (String => Set[String]) {
     def apply(from: String): Set[String] = {