Message: use Seq, not List (allows varargs)

Author: Albert Meltzer

src/main/scala/org/scalastyle/Message.scala

@@ -37,7 +37,7 @@ class MessageHelper(config: Config) {
   def label(key: String): String = getMessage(key + ".label", List())
   def description(key: String): String = getMessage(key + ".description", List())
 
-  private[this] def getMessage(key: String, args: List[String]) = {
+  private[this] def getMessage(key: String, args: Seq[String]) = {
     try {
       val pattern = config.getString(key)
       MessageFormat.format(pattern, args.map(_.asInstanceOf[AnyRef]): _*)
@@ -47,7 +47,7 @@ class MessageHelper(config: Config) {
     }
   }
 
-  def message(key: String, args: List[String]): String =
+  def message(key: String, args: Seq[String]): String =
     // Use ClassLoader of the class from which the message came
     getMessage(key + ".message", args)
 }
@@ -65,7 +65,7 @@ case class StyleError[+T <: FileSpec](
   clazz: Class[_ <: Checker[_]],
   key: String,
   level: Level,
-  args: List[String],
+  args: Seq[String],
   lineNumber: Option[Int]       = None,
   column: Option[Int]           = None,
   customMessage: Option[String] = None
@@ -84,15 +84,10 @@ case class StyleException[+T <: FileSpec](
 ) extends Message[T]
 
 sealed abstract class ScalastyleError
-case class PositionError(position: Int, args: List[String] = List[String](), errorKey: Option[String] = None)
+case class PositionError(position: Int, args: Seq[String] = Nil, errorKey: Option[String] = None)
     extends ScalastyleError
-case class FileError(args: List[String] = List[String](), errorKey: Option[String] = None)
+case class FileError(args: Seq[String] = Nil, errorKey: Option[String] = None) extends ScalastyleError
+case class LineError(line: Int, args: Seq[String] = Nil, errorKey: Option[String] = None)
     extends ScalastyleError
-case class LineError(line: Int, args: List[String] = List[String](), errorKey: Option[String] = None)
+case class ColumnError(line: Int, column: Int, args: Seq[String] = Nil, errorKey: Option[String] = None)
     extends ScalastyleError
-case class ColumnError(
-  line: Int,
-  column: Int,
-  args: List[String]       = List[String](),
-  errorKey: Option[String] = None
-) extends ScalastyleError

src/main/scala/org/scalastyle/Output.scala

@@ -25,7 +25,7 @@ object Output {
   def findMessage(
     messageHelper: MessageHelper,
     key: String,
-    args: List[String],
+    args: Seq[String],
     customMessage: Option[String]
   ): String = {
     customMessage match {