Merge pull request #59 from MoeOrganization/prakashk/repl-with-jline-1

more useable REPL with jline 1.0
MoeOrganization · Feb 22, 2013 · 5f14183 · 5f14183
2 parents d91a00c + 6ba13e9
commit 5f14183
Show file tree

Hide file tree

Showing 2 changed files with 19 additions and 2 deletions.
diff --git a/build.sbt b/build.sbt
@@ -9,3 +9,14 @@ scalacOptions ++= Seq("-deprecation", "-unchecked")
 libraryDependencies += "org.scalatest" % "scalatest_2.10" % "1.9.1" % "test"
 
 libraryDependencies += "commons-cli" % "commons-cli" % "1.2" % "compile"
+
+libraryDependencies += "jline" % "jline" % "1.0"
+
+// execute "run" task in a forked process
+fork in run := true
+
+// forward standard input to forked "run" process
+connectInput in run := true
+
+// send output to the build's standard output and error
+outputStrategy := Some(StdoutOutput)
diff --git a/src/main/scala/org/moe/Moe.scala b/src/main/scala/org/moe/Moe.scala
@@ -121,12 +121,18 @@ object Moe {
    */
   object REPL {
     def enter (interpreter: Interpreter, runtime: MoeRuntime, dumpAST: Boolean = false): Unit = {
+      import jline.ConsoleReader
+
+      val cReader: ConsoleReader = new ConsoleReader
+      val prompt = "moe> "
+
       while (true) {
-        val line = readLine("> ")
-        if (line != null && line != "exit") {
+        val line = cReader readLine prompt
+        if (line != null && line.length > 0 && line != "exit") {
           evalLine(interpreter, runtime, line, dumpAST)
         }
         else {
+          if (line != "exit") println()
           return
         }
       }