Mike Beckerle created DAFFODIL-2737:
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Summary: Need warning when anonymous choices, anonymous choice
branches
Key: DAFFODIL-2737
URL: https://issues.apache.org/jira/browse/DAFFODIL-2737
Project: Daffodil
Issue Type: New Feature
Components: Front End
Affects Versions: 3.3.0
Reporter: Mike Beckerle
Many systems we want to integrate with Apache Daffodil do not support anonymous
choices. They require the choice (aka union) to be named.
Furthermore, they require each choice branch to be a named element, not a
sequence of multiple elements.
In Daffodil, if a choice is not _effectively_ the model-group of an element, we
need a warning to that effect.
We say "not effectively the model-group" because preceding or surrounding
sequences that contain only DFDL statements should be allowed, and hidden
groups can be ignored as well.
Similarly, if a choice branch does not contain a single element, we need a
warning.
A way to escalate such warnings to errors is needed (DAFFODIL-2735).
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