[
https://issues.apache.org/jira/browse/DAFFODIL-2479?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Steve Lawrence resolved DAFFODIL-2479.
--------------------------------------
Fix Version/s: 3.2.0
Resolution: Fixed
Fixed in commit ba35b9bcb78ce91f707f3f811debef9d5f2428b0
> Using %#x25; character class causes invariant abort
> ---------------------------------------------------
>
> Key: DAFFODIL-2479
> URL: https://issues.apache.org/jira/browse/DAFFODIL-2479
> Project: Daffodil
> Issue Type: Bug
> Components: Front End
> Affects Versions: 3.0.0
> Reporter: Steve Lawrence
> Assignee: Steve Lawrence
> Priority: Minor
> Fix For: 3.2.0
>
>
> I have a file format where it is natural to specify initiators using hex
> character classes because the specification uses hex values. One case of this
> is an initator that has a value of 0x25 in hex. In ASCII encoding this is the
> percent character (%). For example:
> {code:xml}
> <xs:element name="foo" type="xs:string" dfdl:initiator="%#x25;" />
> {code}
> Using the above leads to the following invariant abort:
> {code:none}
> org.apache.daffodil.exceptions.Abort: Invariant broken. delimStr should not
> end in an isolated single %. DelimStr = %
> org.apache.daffodil.exceptions.Assert$.abort(Assert.scala:129)
> org.apache.daffodil.exceptions.Assert$.invariantFailed(Assert.scala:175)
> org.apache.daffodil.processors.Delimiter.buildDelimBuf(DFDLDelimiter.scala:331)
> org.apache.daffodil.processors.Delimiter.compileDelimiter(DFDLDelimiter.scala:69)
> at org.apache.daffodil.exceptions.Assert$.abort(Assert.scala:129)
> at
> org.apache.daffodil.exceptions.Assert$.invariantFailed(Assert.scala:175)
> at
> org.apache.daffodil.processors.Delimiter.buildDelimBuf(DFDLDelimiter.scala:331)
> at
> org.apache.daffodil.processors.Delimiter.compileDelimiter(DFDLDelimiter.scala:69)
> at
> org.apache.daffodil.processors.dfa.CreateDelimiterDFA$.apply(CreateDelimiterDFA.scala:68)
> at
> org.apache.daffodil.processors.dfa.CreateDelimiterDFA$.$anonfun$apply$3(CreateDelimiterDFA.scala:97)
> {code}
> It looks like Daffodil is treating this exactly as if it were a "%". For
> example, if I change the initiator to this:
> {code:xml}
> <xs:element name="foo" type="xs:string" dfdl:initiator="%#x25;NL;" />
> {code}
> then it looks for a newline initator (i.e. %NL\;)
> Note that {{dfdl:initiator="%"}} does give a helpful error message, so this
> is specific to using a character class entity that encodes to a percent.
> The workaround is to specify the initiator as "%%" (i.e. an escaped percent).
> This works fine, but is not ideal in this case because all initiators are
> better described using hex values.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
