Resolve #96 base case

- Make the member trees search use  an iterator so we only grab the very first one

enumeratum-core/src/test/scala/enumeratum/values/Compilation.scala

@@ -0,0 +1,25 @@
+package enumeratum.values
+
+/**
+  * Created by Lloyd on 1/4/17.
+  *
+  * Copyright 2017
+  */
+// From https://github.com/lloydmeta/enumeratum/issues/96
+
+sealed abstract class A private (val value: Int) extends IntEnumEntry {
+  val text: String
+}
+
+object A extends IntEnum[A] {
+
+  val values = findValues
+
+  case object A1 extends A(1) {
+    val text = identity("something") // Error:(9, 16) object A1 has a value with the wrong type: something:class java.lang.String, instead of int.
+    //val text = "something"
+  }
+
+  def identity(str: String) = str
+
+}

macros/src/main/scala/enumeratum/ValueEnumMacros.scala

@@ -167,12 +167,13 @@ object ValueEnumMacros {
     val valueTerm = ContextUtils.termName(c)("value")
     // go through all the trees
     memberTrees.map { declTree =>
-      val values = declTree.collect {
+      val trees = declTree.collect { case t => t }.iterator
+      val values = trees.collect {
         // The tree has a value declaration with a constant value.
         case ValDef(_, termName, _, Literal(Constant(i: ValueType))) if termName == valueTerm =>
           Some(i)
         // The tree has a method call
-        case Apply(fun, args) => {
+        case Apply(_, args) => {
           val valueArguments: List[Option[ValueType]] =
             valueEntryCTorsParams.collect {
               // Find the constructor params list that matches the arguments list size of the method call