jadams-tresys commented on code in PR #987:
URL: https://github.com/apache/daffodil/pull/987#discussion_r1911276638


##########
daffodil-runtime1/src/main/scala/org/apache/daffodil/runtime1/processors/parsers/Parser.scala:
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@@ -227,26 +227,47 @@ abstract class CombinatorParser(override val context: 
RuntimeData)
   extends Parser
   with CombinatorProcessor
 
-final class SeqCompParser(context: RuntimeData, val childParsers: 
Vector[Parser])
-  extends CombinatorParser(context) {
+final class SeqCompParser(
+  context: RuntimeData,
+  val childParsers: Vector[Parser],
+) extends CombinatorParser(context) {
   override lazy val runtimeDependencies = Vector()
   override def childProcessors = childParsers
 
   override def nom = "seq"
 
-  val numChildParsers = childParsers.size
+  val assertDiscrimExpressions = childParsers.collect { case ae: 
AssertExpressionEvaluationParser => ae }
+  val discrimExpressions = assertDiscrimExpressions.filter { _.discrim }
+  val assertExpressions = assertDiscrimExpressions.filterNot { _.discrim }
+  val nonAssertChildren = childParsers.diff(assertExpressions)

Review Comment:
   @stevedlawrence is right.  It should be
   
   ```    val nonAssertChildren = childParsers.diff(assertDiscrimExpressions)```
   
   then there won't be duplicates.  Will change.



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