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https://issues.apache.org/jira/browse/GROOVY-8570?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16467466#comment-16467466
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Paul King commented on GROOVY-8570:
-----------------------------------
I thought I had made a previous comment for this but it was right before
boarding a plane and it appears that it didn't get through. In any case, I was
going to suggest someone look into making a hook for calling codenarc as part
of the compilation process. I don't want to prescribe what level of integration
that might involve until someone looks into it. But that could well allow us to
keep the compiler lean and mean (well sort of) but still allow some additional
checking to happen for those that want it.
> Support Warnings in Groovy Compiler
> -----------------------------------
>
> Key: GROOVY-8570
> URL: https://issues.apache.org/jira/browse/GROOVY-8570
> Project: Groovy
> Issue Type: New Feature
> Components: Compiler
> Affects Versions: 3.0.0-alpha-3
> Reporter: mgroovy
> Priority: Major
>
> * To warn Java developers using e.g. non-idiomatic Groovy constructs which
> only exist to support copy-and-paste Java-to-Groovy code compatibility, The
> Groovy compiler should support compiler warnings in addition to compiler
> errors.
> * Warnings should by default only be emitted in special circumstances such
> as the one described above, and not spam developers with an endless stream
> of, often subjectve, messages on "how to use Groovy correctly".
> * Sample warnings:
> # WARNING: Using curly braces Java style array literals (\{...}) is not
> idiomatic Groovy. To avoid confusion with Groovy closures, it is recommended
> to use the performance-identical Groovy square bracket list literal syntax
> ([...]) instead.
> # WARNING: The 'var' keyword is currently only an alias to 'def' (i.e.
> Object) in Groovy. To get reassignment type safety use an explicit type
> instead.
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