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https://issues.apache.org/jira/browse/JEXL-367?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17530481#comment-17530481
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Hussachai Puripunpinyo commented on JEXL-367:
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[~henrib] Fair enough. I've been thinking about this, and I think I agree with
you on the feature control. I don't like two syntax doing the same thing like
supporting both fat arrow and thin arrow at the same time. Even one is
deprecated, users tend to ignore that and I feel like the code will be
confusing. So, the feature control is a good idea.
That's a great news to me to know that `let` is in your plan. We have a lot of
JEXL scripts written by users and some script are really huge. One thing about
`var`. If it's declared at the top level, it still won't be exported to the
context. Is that intentional?
Also, I know this is deviating from the original topic, but since I got your
attention here.
Do you plan to support the function declaration syntax like the following?
{code:java}
function name(args) {
...
}
{code}
> Deprecate -> and support =>
> ---------------------------
>
> Key: JEXL-367
> URL: https://issues.apache.org/jira/browse/JEXL-367
> Project: Commons JEXL
> Issue Type: Wish
> Affects Versions: 3.2.1
> Reporter: Hussachai Puripunpinyo
> Assignee: Henri Biestro
> Priority: Major
>
> The JEXL code surprisingly looks a lot like Javascript. I think this change
> is a good transition for folks to update the code, and it's pretty fine if
> they can tolerate using the deprecate syntax and don't mind seeing a warning
> log pop up every time.
> I'd like to propose supporting => and deprecate ->.
> The reasons are
> - JavaScript becomes very popular and many people are familiar with it.
> - JEXL is more like for a quick short script. In many scenarios, the target
> audiences are not a programer. They often mistake a language as a JavaScript
> (from my experience).
> - JEXL syntax already looks a lot like JavaScript
> -- var for variable declaration (Java added in Java 10, but JavaScript
> supports this from the beginning)
> -- The function keyword
> -- Implicit type coercion
> -- Ternary operator
> The proposed change.
> * Support => in addition to ->
> * Deprecate -> and show a warning log when it's used.
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