[jira] [Closed] (GROOVY-4816) Visiting Empty expressions

["Paul King (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/GROOVY-4816?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Paul King closed GROOVY-4816.
-----------------------------

> Visiting Empty expressions
> --------------------------
>
>                 Key: GROOVY-4816
>                 URL: https://issues.apache.org/jira/browse/GROOVY-4816
>             Project: Groovy
>          Issue Type: Improvement
>          Components: Compiler
>    Affects Versions: 1.8.0
>            Reporter: Andrew Eisenberg
>            Priority: Major
>             Fix For: 3.0.0-rc-1
>
>
> We are trying to integrate some parts of the Groovy-Eclipse patch on the Groovy compiler back into the compiler itself.  One such change is this.
> In GroovyCodeVisitor, there is no method to visit empty expressions.  For consistency, we should be visiting every kind of expression.
> Please add this to GroovyCodeVisitor:
> {code}
> void visitEmptyExpression(EmptyExpression expression); 
> {code}
> and this to {{EmptyExpression}} inside of the otherwise empty {{visit}} method:
> {code}
> visitor.visitEmptyExpression(this);
> {code}
> I realize that this would break classes that currently implement GroovyCodeVisitor, but this is an inconsistency in your AST visitor pattern.  So I am not sure of the best way to proceed.  



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