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https://issues.apache.org/jira/browse/JEXL-295?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16806163#comment-16806163
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Dmitri Blinov commented on JEXL-295:
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I'm terribly sorry but, with regard to the current implementation, is the
`positivize` a correct term to use for unary plus operator? One might think
that `positivize` is indended to make something positive, which in our case is
not. Should we instead call it `promote` ?
> Add unary plus operator
> -----------------------
>
> Key: JEXL-295
> URL: https://issues.apache.org/jira/browse/JEXL-295
> Project: Commons JEXL
> Issue Type: New Feature
> Affects Versions: 3.1
> Reporter: Henri Biestro
> Assignee: Henri Biestro
> Priority: Major
> Fix For: 3.2
>
>
> WHAT
> Introduce a new operator, the unary plus as in '+4' or '+b' expressions. JEXL
> arithmetic already allows using a unary minus operator (the negate operation)
> so there is logic in having the counterpart.
> The proposed default behaviour would be to:
> - call the 'Math.abs(...)' method for numbers
> - return true for boolean
> - could uppercase strings ? (should '-' lowercase strings ??)
> HOW
> - Follow the unary minus syntax and construct in the .jjt / ASTUnaryPlus /
> ParserVisitor
> - Implement Interpreter, Debugger
> - Implement abs in JexlArithmetic
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