mbeckerle commented on a change in pull request #264: WIP - DAFFODIL-2169
URL: https://github.com/apache/incubator-daffodil/pull/264#discussion_r306833577
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File path: daffodil-lib/src/main/scala/org/apache/daffodil/util/DataValue.scala
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@@ -0,0 +1,91 @@
+package org.apache.daffodil.infoset
+
+import java.lang.{ Boolean => JBoolean, Number => JNumber, Long => JLong,
Double => JDouble, String => JString, Float => JFloat, Byte => JByte, Integer
=> JInt, Short => JShort }
+import java.math.{ BigDecimal => JBigDecimal, BigInteger => JBigInt }
+import org.apache.daffodil.calendar.DFDLCalendar
+
+/*
+ * DINode is not visible to Daffodil-lib, so we cannot actually reference this
here.
+ * We are trusting the rest of the codebase to only apply DataValueDINode to
the DINode
+ * class.
+ * The DINode class itself defines an implicit DataValueDINode -> DINode
conversion
+ */
+trait DataValueDINodeTrait extends NonNullable;
+
+trait NonNullable;
+trait Nullable extends NonNullable;
+sealed trait DataValuePrimitiveType
+
+final class DataValue[+T <: AnyRef, +X<:AnyRef] private (val v: T) extends
AnyVal {
+ def isEmpty = DataValue.NoValue.v eq v
+ def isDefined = !isEmpty
+ def value = v
+ override def toString = if (isEmpty) "NoValue" else "DataValue("+ v.toString
+")"
+
+ def getAnyRef = v.asInstanceOf[AnyRef]
Review comment:
No cast needed above. v is already AnyRef. I would hope the scala compiler
knows that, but ...?
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