stevedlawrence commented on a change in pull request #130: Initial commit
URL: https://github.com/apache/incubator-daffodil/pull/130#discussion_r229694682
##########
File path:
daffodil-runtime1/src/main/scala/org/apache/daffodil/processors/dfa/CreateDelimiterDFA.scala
##########
@@ -116,6 +118,7 @@ object CreateDelimiterDFA {
private def buildTransitions(delim: Seq[DelimBase],
allStates: ArrayBuffer[State], ignoreCase: Boolean): State = {
+ System.out.println("Delim: " + delim)
assert(!delim.isEmpty)
Review comment:
Changing from the scala assert() method to daffodils Assert.invariant()
results in a stack trace that makes it a little easier to see what's going on.
This is part of the stack trace:
```
[error] org.apache.daffodil.exceptions.Assert$.abort(Assert.scala:129)
[error]
org.apache.daffodil.processors.dfa.CreateDelimiterDFA$.buildTransitions(CreateDelimiterDFA.scala:123)
[error]
org.apache.daffodil.processors.dfa.CreateDelimiterDFA$.apply(CreateDelimiterDFA.scala:44)
[error]
org.apache.daffodil.processors.dfa.CreateDelimiterDFA$.apply(CreateDelimiterDFA.scala:83),
took 1.291 sec
[error] at org.apache.daffodil.exceptions.Assert$.abort(Assert.scala:129)
[error] at
org.apache.daffodil.processors.dfa.CreateDelimiterDFA$.buildTransitions(CreateDelimiterDFA.scala:123)
[error] at
org.apache.daffodil.processors.dfa.CreateDelimiterDFA$.apply(CreateDelimiterDFA.scala:44)
[error] at
org.apache.daffodil.processors.dfa.CreateDelimiterDFA$.apply(CreateDelimiterDFA.scala:83)
[error] at
org.apache.daffodil.processors.DelimiterUnparseEv.compute(EvDelimiters.scala:100)
[error] at
org.apache.daffodil.processors.DelimiterUnparseEv.compute(EvDelimiters.scala:83)
```
So the assert is getting called from the DelimiterUnparseEv. I suspect you
just need to add logic to that Ev, similar to what you do for DelimiterParseEv.
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