[jira] [Commented] (GROOVY-10659) Using map literal as function argument, does not compile.

["Eric Milles (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/GROOVY-10659?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17555661#comment-17555661 ] 

Eric Milles commented on GROOVY-10659:
--------------------------------------

For a non-string, non-integer key, you need to surround the key expression in parentheses. 

> Using map literal as function argument, does not compile.
> ---------------------------------------------------------
>
>                 Key: GROOVY-10659
>                 URL: https://issues.apache.org/jira/browse/GROOVY-10659
>             Project: Groovy
>          Issue Type: Bug
>            Reporter: Michal Ševčenko
>            Priority: Major
>
> This is IMO a regression (wrt. e.g. Groovy 2.4.11), the following does not compile in Groovy 3.0.10.
> {code:java}
> def fun = { arg ->
>     return arg
> }
> fun (
>     x: 1,
>     [a: 1]: '2'
> ){code}
> This is the combination of the following:
>  * map literal is used as an argument of a function, without enclosing brackets (I hope this  is legal)
>  * another map literal is used as a key of the outer map (I hope this is legal too)
> If both these preconditions are met, the compiler complains with:
> {code:java}
> org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
> index.groovy: 5: Unexpected input: '(' @ line 5, column 5.
>    fun (
>        ^
> 1 error {code}
> This does compile:
> {code:java}
> def fun = { arg ->
>     return arg
> }
> fun (
>     x: 1,
>     a: '2'
> ){code}
> So does this:
> {code:java}
> def fun = { arg ->
>     return arg
> }
> fun ([
>     x: 1,
>     [a: 1]: '2'
> ]) {code}
> Is this a bug?



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