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Date: Fri, 7 Oct 2016 14:48:20 +0000 (UTC)
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Subject: [jira] [Commented] (GROOVY-7951)
 MethodCallExpression.transformExpression does not copy generic types
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archived-at: Fri, 07 Oct 2016 14:48:22 -0000


    [ https://issues.apache.org/jira/browse/GROOVY-7951?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15555271#comment-15555271 ] 

ASF GitHub Bot commented on GROOVY-7951:
----------------------------------------

GitHub user jwagenleitner opened a pull request:

    https://github.com/apache/groovy/pull/441

    GROOVY-7951: MethodCallExpression.transformExpression does not copy generic types

    PR created from patch supplied in [GROOVY-7951](https://issues.apache.org/jira/browse/GROOVY-7951).  It seems like a reasonable change to make, though I did have trouble thinking up a way to test it that would be meaningful.  If anyone can nudge me in the right direction I can try to write up a test if you think it's warranted in this case.
    
    I considered whether `genericsTypes.clone()` should be used, but it didn't seem to be common and most uses of the array seem to be read only.

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/jwagenleitner/groovy GROOVY-7951

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/groovy/pull/441.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #441
    
----
commit 76f9cdabd6e48baf5721b6b6dbff21a109f164a7
Author: John Wagenleitner <jwagenleitner@apache.org>
Date:   2016-10-04T22:29:59Z

    GROOVY-7951: MethodCallExpression.transformExpression does not copy generic types

----


> MethodCallExpression.transformExpression does not copy generic types
> --------------------------------------------------------------------
>
>                 Key: GROOVY-7951
>                 URL: https://issues.apache.org/jira/browse/GROOVY-7951
>             Project: Groovy
>          Issue Type: Bug
>          Components: ast builder
>    Affects Versions: 2.4.7
>            Reporter: Eric Milles
>            Priority: Minor
>
> org.codehaus.groovy.ast.expr.MethodCallExpression.transformExpression(ExpressionTransformer) is not copying generics info.  Downstream visitors are unable to check generics on static calls like Collections.<String>emptyList().
> My patched version:
> {code:java}
>     public Expression transformExpression(ExpressionTransformer transformer) {
>         MethodCallExpression answer =
>             new MethodCallExpression(transformer.transform(objectExpression), transformer.transform(method), transformer.transform(arguments));
>         answer.setSafe(safe);
>         answer.setSpreadSafe(spreadSafe);
>         answer.setImplicitThis(implicitThis);
>         // GRECLIPSE add
>         answer.setGenericsTypes(genericsTypes);
>         // GRECLIPSE end
>         answer.setMethodTarget(target);
>         answer.setSourcePosition(this);
>         answer.copyNodeMetaData(this);
>         return answer;
>     }
> {code}


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