Merge pull request #557 from ScrapCodes/style. Closes #557.

SPARK-1058, Fix Style Errors and Add Scala Style to Spark Build.

Author: Patrick Wendell <pwendell@gmail.com>
Author: Prashant Sharma <scrapcodes@gmail.com>

== Merge branch commits ==

commit 1a8bd1c059b842cb95cc246aaea74a79fec684f4
Author: Prashant Sharma <scrapcodes@gmail.com>
Date:   Sun Feb 9 17:39:07 2014 +0530

    scala style fixes

commit f91709887a8e0b608c5c2b282db19b8a44d53a43
Author: Patrick Wendell <pwendell@gmail.com>
Date:   Fri Jan 24 11:22:53 2014 -0800

    Adding scalastyle snapshot

9 files changed, 25 insertions, 6 deletions

diff --git a/repl/src/main/scala/org/apache/spark/repl/ExecutorClassLoader.scala b/repl/src/main/scala/org/apache/spark/repl/ExecutorClassLoader.scala
index 3e171849e3..e3bcf7f30a 100644
--- a/repl/src/main/scala/org/apache/spark/repl/ExecutorClassLoader.scala
+++ b/repl/src/main/scala/org/apache/spark/repl/ExecutorClassLoader.scala
@@ -39,20 +39,22 @@ extends ClassLoader(parent) {
 
   // Hadoop FileSystem object for our URI, if it isn't using HTTP
   var fileSystem: FileSystem = {
-    if (uri.getScheme() == "http")
+    if (uri.getScheme() == "http") {
       null
-    else
+    } else {
       FileSystem.get(uri, new Configuration())
+    }
   }
   
   override def findClass(name: String): Class[_] = {
     try {
       val pathInDirectory = name.replace('.', '/') + ".class"
       val inputStream = {
-        if (fileSystem != null)
+        if (fileSystem != null) {
           fileSystem.open(new Path(directory, pathInDirectory))
-        else
+        } else {
           new URL(classUri + "/" + urlEncode(pathInDirectory)).openStream()
+        }
       }
       val bytes = readAndTransformClass(name, inputStream)
       inputStream.close()
@@ -81,10 +83,11 @@ extends ClassLoader(parent) {
       var done = false
       while (!done) {
         val num = in.read(bytes)
-        if (num >= 0)
+        if (num >= 0) {
           bos.write(bytes, 0, num)
-        else
+        } else {
           done = true
+        }
       }
       return bos.toByteArray
     }
diff --git a/repl/src/main/scala/org/apache/spark/repl/SparkExprTyper.scala b/repl/src/main/scala/org/apache/spark/repl/SparkExprTyper.scala
index b2e1df173e..dcc139544e 100644
--- a/repl/src/main/scala/org/apache/spark/repl/SparkExprTyper.scala
+++ b/repl/src/main/scala/org/apache/spark/repl/SparkExprTyper.scala
@@ -1,3 +1,5 @@
+// scalastyle:off
+
 /* NSC -- new Scala compiler
  * Copyright 2005-2013 LAMP/EPFL
  * @author  Paul Phillips
diff --git a/repl/src/main/scala/org/apache/spark/repl/SparkILoop.scala b/repl/src/main/scala/org/apache/spark/repl/SparkILoop.scala
index 87d94d51be..bc25b50a4e 100644
--- a/repl/src/main/scala/org/apache/spark/repl/SparkILoop.scala
+++ b/repl/src/main/scala/org/apache/spark/repl/SparkILoop.scala
@@ -1,3 +1,5 @@
+// scalastyle:off
+
 /* NSC -- new Scala compiler
  * Copyright 2005-2013 LAMP/EPFL
  * @author Alexander Spoon
diff --git a/repl/src/main/scala/org/apache/spark/repl/SparkILoopInit.scala b/repl/src/main/scala/org/apache/spark/repl/SparkILoopInit.scala
index efe45240e9..3ebf288130 100644
--- a/repl/src/main/scala/org/apache/spark/repl/SparkILoopInit.scala
+++ b/repl/src/main/scala/org/apache/spark/repl/SparkILoopInit.scala
@@ -1,3 +1,5 @@
+// scalastyle:off
+
 /* NSC -- new Scala compiler
  * Copyright 2005-2013 LAMP/EPFL
  * @author Paul Phillips
diff --git a/repl/src/main/scala/org/apache/spark/repl/SparkIMain.scala b/repl/src/main/scala/org/apache/spark/repl/SparkIMain.scala
index 59fdb0b37a..1d73d0b699 100644
--- a/repl/src/main/scala/org/apache/spark/repl/SparkIMain.scala
+++ b/repl/src/main/scala/org/apache/spark/repl/SparkIMain.scala
@@ -1,3 +1,5 @@
+// scalastyle:off
+
 /* NSC -- new Scala compiler
  * Copyright 2005-2013 LAMP/EPFL
  * @author  Martin Odersky
diff --git a/repl/src/main/scala/org/apache/spark/repl/SparkImports.scala b/repl/src/main/scala/org/apache/spark/repl/SparkImports.scala
index 64084209e8..8f61a5e835 100644
--- a/repl/src/main/scala/org/apache/spark/repl/SparkImports.scala
+++ b/repl/src/main/scala/org/apache/spark/repl/SparkImports.scala
@@ -1,3 +1,5 @@
+// scalastyle:off
+
 /* NSC -- new Scala compiler
  * Copyright 2005-2013 LAMP/EPFL
  * @author  Paul Phillips
diff --git a/repl/src/main/scala/org/apache/spark/repl/SparkJLineCompletion.scala b/repl/src/main/scala/org/apache/spark/repl/SparkJLineCompletion.scala
index 8865f82bc0..3159b70008 100644
--- a/repl/src/main/scala/org/apache/spark/repl/SparkJLineCompletion.scala
+++ b/repl/src/main/scala/org/apache/spark/repl/SparkJLineCompletion.scala
@@ -1,3 +1,5 @@
+// scalastyle:off
+
 /* NSC -- new Scala compiler
  * Copyright 2005-2013 LAMP/EPFL
  * @author Paul Phillips
diff --git a/repl/src/main/scala/org/apache/spark/repl/SparkJLineReader.scala b/repl/src/main/scala/org/apache/spark/repl/SparkJLineReader.scala
index 60a4d7841e..946e710390 100644
--- a/repl/src/main/scala/org/apache/spark/repl/SparkJLineReader.scala
+++ b/repl/src/main/scala/org/apache/spark/repl/SparkJLineReader.scala
@@ -1,3 +1,5 @@
+// scalastyle:off
+
 /* NSC -- new Scala compiler
  * Copyright 2005-2013 LAMP/EPFL
  * @author Stepan Koltsov
diff --git a/repl/src/main/scala/org/apache/spark/repl/SparkMemberHandlers.scala b/repl/src/main/scala/org/apache/spark/repl/SparkMemberHandlers.scala
index 382f8360a7..13cd2b7fa5 100644
--- a/repl/src/main/scala/org/apache/spark/repl/SparkMemberHandlers.scala
+++ b/repl/src/main/scala/org/apache/spark/repl/SparkMemberHandlers.scala
@@ -1,3 +1,5 @@
+// scalastyle:off
+
 /* NSC -- new Scala compiler
  * Copyright 2005-2013 LAMP/EPFL
  * @author  Martin Odersky