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https://issues.apache.org/jira/browse/JSIEVE-43?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12653491#action_12653491
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Robert Burrell Donkin commented on JSIEVE-43:
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Had a little think about design. Would like to be flexible enough to support
various output pipelines: should be able to write out a Sieve script or xml.
Implementing SieveParserVisitor seems like the best place to start. This
visitor is designed to perform it's own tree recursion which suits well.
The classic first stage of the pipeline is to turn the tree recursion into a
linear series of start and end events. For flexibility, these should be node
based. This will end up a rather large API with each start and end calls for
each concrete node type.
This would probably be enough to plugin custom output to strings including
basic XML rendering. More stages in the pipeline would be required for more
sophisticated such as XML pipelining.
On balance should be very do-able.
> Add API for generating a Sieve script from a parse tree
> --------------------------------------------------------
>
> Key: JSIEVE-43
> URL: https://issues.apache.org/jira/browse/JSIEVE-43
> Project: JAMES jSieve
> Issue Type: New Feature
> Affects Versions: 0.2, 0.3, 1.0
> Reporter: Boris Burtin
>
> There's currently no way to generate a Sieve script from a jSieve Node tree.
> This would be very helpful for cases where you need to parse a script, modify
> some nodes, and then generate a new script that incorporates the changes.
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