mbeckerle commented on a change in pull request #259: Incremental progress on
schema compilation space/speed issue.
URL: https://github.com/apache/incubator-daffodil/pull/259#discussion_r301852346
##########
File path:
daffodil-core/src/main/scala/org/apache/daffodil/dpath/Expression.scala
##########
@@ -943,155 +950,148 @@ sealed abstract class StepExpression(val step: String,
val pred: Option[Predicat
NodeInfo.ArrayIndex
}
+}
+
+sealed abstract class DownStepExpression(s: String, predArg:
Option[PredicateExpression])
+ extends StepExpression(s, predArg) {
+
override lazy val inherentType: NodeInfo.Kind = {
if (!isLastStep) NodeInfo.Complex
else {
- if (stepElement.optPrimType.isDefined) {
+ if (stepElements.head.optPrimType.isDefined) {
Review comment:
Right, so this is an issue where the expression such as ../foo is
polymorphic. We either have to support that, or rule it out. The easiest and
conservative design choice is to rule it out, so I will add a check that all
uses are the same primType.
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