Fixes scala#1316: Remove JLine

Dotty uses ammonite.terminal since April (53bd25f) which replaces JLine.
There is no reason to keep it anymore.

bin/common

@@ -11,7 +11,6 @@ function getLastStringOnLineWith {
 SCALA_VERSION=$(getLastStringOnLineWith "scalaVersion in")
 SCALA_BINARY_VERSION=2.11
 SCALA_COMPILER_VERSION=$(getLastStringOnLineWith "scala-compiler")
-JLINE_VERSION=$(getLastStringOnLineWith "jline")
 SBT_VERSION=$(grep "sbt.version=" "$DOTTY_ROOT/project/build.properties" | sed 's/sbt.version=//')
 bootcp=true
 bootstrapped=false
@@ -129,10 +128,6 @@ if [ "$SCALA_COMPILER_JAR" == "" ]; then
     SCALA_COMPILER_JAR=$(find_jar "$HOME/.ivy2/cache/me.d-d/scala-compiler/jars" "scala-compiler-$SCALA_COMPILER_VERSION.jar")
 fi
 
-if [ "$JLINE_JAR" == "" ]; then
-    JLINE_JAR=$(find_jar "$HOME/.ivy2/cache/jline/jline/jars" "jline-$JLINE_VERSION.jar")
-fi
-
 if [ "$SBT_INTERFACE_JAR" == "" ]; then
     SBT_INTERFACE_JAR=$(find_jar "$HOME/.ivy2/cache/org.scala-sbt/interface/jars" "interface-$SBT_VERSION.jar")
 fi

bin/dotc

@@ -19,13 +19,12 @@ CompilerMain=dotty.tools.dotc.Main
 FromTasty=dotty.tools.dotc.FromTasty
 ReplMain=dotty.tools.dotc.repl.Main
 
-if [ ! -f "$SCALA_LIBRARY_JAR" -o ! -f "$SCALA_REFLECT_JAR"  -o ! -f "$SCALA_COMPILER_JAR"  -o ! -f "$JLINE_JAR" -o ! -f "$SBT_INTERFACE_JAR" ]
+if [ ! -f "$SCALA_LIBRARY_JAR" -o ! -f "$SCALA_REFLECT_JAR"  -o ! -f "$SCALA_COMPILER_JAR" -o ! -f "$SBT_INTERFACE_JAR" ]
 then
   echo To use this script please set
   echo SCALA_LIBRARY_JAR to point to scala-library-$SCALA_VERSION.jar "(currently $SCALA_LIBRARY_JAR)"
   echo SCALA_REFLECT_JAR to point to scala-reflect-$SCALA_VERSION.jar "(currently $SCALA_REFLECT_JAR)"
   echo SCALA_COMPILER_JAR to point to scala-compiler-$SCALA_VERSION.jar with bcode patches "(currently $SCALA_COMPILER_JAR)"
-  echo JLINE_JAR to point to jline-$JLINE_VERSION.jar "(currently $JLINE_JAR)"
   echo SBT_INTERFACE_JAR to point to interface-$SBT_VERSION.jar "(currently $SBT_INTERFACE_JAR)"
 fi
 
@@ -116,9 +115,9 @@ trap onExit INT
 classpathArgs () {
   if [[ "true" == $bootstrapped ]]; then
     check_jar "dotty-bootstrapped" $DOTTY_JAR "target" 'build_jar "test:runMain dotc.build" target' &> /dev/null
-    toolchain="$DOTTY_JAR:$SCALA_LIBRARY_JAR:$SCALA_REFLECT_JAR:$SCALA_COMPILER_JAR:$JLINE_JAR:$SBT_INTERFACE_JAR"
+    toolchain="$DOTTY_JAR:$SCALA_LIBRARY_JAR:$SCALA_REFLECT_JAR:$SCALA_COMPILER_JAR:$SBT_INTERFACE_JAR"
   else
-    toolchain="$SCALA_LIBRARY_JAR:$SCALA_REFLECT_JAR:$SCALA_COMPILER_JAR:$JLINE_JAR:$SBT_INTERFACE_JAR"
+    toolchain="$SCALA_LIBRARY_JAR:$SCALA_REFLECT_JAR:$SCALA_COMPILER_JAR:$SBT_INTERFACE_JAR"
   fi
   bcpJars="$INTERFACES_JAR:$MAIN_JAR"
   cpJars="$INTERFACES_JAR:$MAIN_JAR:$TEST_JAR"

project/Build.scala

@@ -99,7 +99,6 @@ object DottyBuild extends Build {
       libraryDependencies ++= Seq("org.scala-lang.modules" %% "scala-xml" % "1.0.1",
                                   "org.scala-lang.modules" %% "scala-partest" % "1.0.11" % "test",
                                   "com.novocode" % "junit-interface" % "0.11" % "test",
-                                  "jline" % "jline" % "2.12",
                                   "com.googlecode.java-diff-utils" % "diffutils" % "1.3.0",
                                   "com.typesafe.sbt" % "sbt-interface" % sbtVersion.value),
       // enable improved incremental compilation algorithm

src/dotty/tools/dotc/config/ScalaSettings.scala

@@ -74,7 +74,6 @@ class ScalaSettings extends Settings.SettingGroup {
   val maxClassfileName = IntSetting("-Xmax-classfile-name", "Maximum filename length for generated classes", 255, 72 to 255)
   val Xmigration = VersionSetting("-Xmigration", "Warn about constructs whose behavior may have changed since version.")
   val Xsource = VersionSetting("-Xsource", "Treat compiler input as Scala source for the specified version.")
-  val Xnojline = BooleanSetting("-Xnojline", "Do not use JLine for editing.")
   val Xverify = BooleanSetting("-Xverify", "Verify generic signatures in generated bytecode (asm backend only.)")
   val plugin = MultiStringSetting("-Xplugin", "file", "Load one or more plugins from files.")
   val disable = MultiStringSetting("-Xplugin-disable", "plugin", "Disable the given plugin(s).")

src/dotty/tools/dotc/repl/InteractiveReader.scala

@@ -13,17 +13,8 @@ trait InteractiveReader {
 /** The current Scala REPL know how to do this flexibly.
  */
 object InteractiveReader {
-  /** Create an interactive reader.  Uses JLine if the
-   *  library is available, but otherwise uses a
-   *  SimpleReader. */
+  /** Create an interactive reader */
   def createDefault(in: Interpreter)(implicit ctx: Context): InteractiveReader = {
-    try {
-      new AmmoniteReader(in)
-    } catch { case e =>
-      //out.println("jline is not available: " + e) //debug
-      e.printStackTrace()
-      println("Could not use ammonite, falling back to simple reader")
-      new SimpleReader()
-    }
+    new AmmoniteReader(in)
   }
 }

src/dotty/tools/dotc/repl/Main.scala

@@ -13,7 +13,6 @@ package repl
  *
  * There are a number of TODOs:
  *
- *  - re-enable jline support (urgent, easy, see TODO in InteractiveReader.scala)
  *  - figure out why we can launch REPL only with `java`, not with `scala`.
  *  - make a doti command (urgent, easy)
  *  - create or port REPL tests (urgent, intermediate)
@@ -26,4 +25,4 @@ package repl
  *  - integrate with presentation compiler for command completion (not urgent, hard)
  */
 /** The main entry point of the REPL */
-object Main extends REPL
+object Main extends REPL

src/dotty/tools/dotc/repl/REPL.scala

@@ -90,7 +90,7 @@ object REPL {
     def input(in: Interpreter)(implicit ctx: Context): InteractiveReader = {
       val emacsShell = System.getProperty("env.emacs", "") != ""
       //println("emacsShell="+emacsShell) //debug
-      if (ctx.settings.Xnojline.value || emacsShell) new SimpleReader()
+      if (emacsShell) new SimpleReader()
       else InteractiveReader.createDefault(in)
     }
 

test/test/ShowClassTests.scala

@@ -95,11 +95,6 @@ class ShowClassTests extends DottyTest {
     showClasses("scala.math.Ordering")
   }
 
-  @Test
-  def loadJavaClasses() = {
-    showPackage("scala.tools.jline", 0)
-  }
-
   @Test
   def loadMoreClasses() = {
     showClasses("scala.collection.JavaConversions")