[GitHub] [incubator-daffodil] jadams-tresys commented on a change in pull request #218: Implement dfdl:choiceLength='explicit'

[GitBox <gi...@apache.org>]

jadams-tresys commented on a change in pull request #218: Implement dfdl:choiceLength='explicit'
URL: https://github.com/apache/incubator-daffodil/pull/218#discussion_r290463690
 
 

 ##########
 File path: daffodil-runtime1-unparser/src/main/scala/org/apache/daffodil/processors/unparsers/SpecifiedLengthUnparsers.scala
 ##########
 @@ -428,3 +429,20 @@ class SpecifiedLengthPrefixedUnparser(
   }
 
 }
+
+class ChoiceLengthUnparser(
+  eUnparser: Unparser,
+  rd: TermRuntimeData)
+  extends CombinatorUnparser(rd)
+  with CaptureUnparsingValueLength {
+
+  override lazy val runtimeDependencies = Vector()
+  override lazy val childProcessors = Vector(eUnparser)
+
+  override def unparse(state: UState): Unit = {
+    val elem = state.currentInfosetNode.asInstanceOf[DIElement]
+    captureValueLengthStart(state, elem)
+    eUnparser.unparse1(state)
+    captureValueLengthEnd(state, elem)
+  }
 
 Review comment:
   I believe I have now implemented this correctly in the most recent commit

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