[jira] [Commented] (GROOVY-7681) ability to add warnings from AST transformations

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

    [ https://issues.apache.org/jira/browse/GROOVY-7681?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17462240#comment-17462240 ] 

Eric Milles commented on GROOVY-7681:
-------------------------------------

This is how I add a warning for an AST node ({{argument}} in this case):
{code}
getErrorCollector().addWarning(0, warning, new org.codehaus.groovy.syntax.Token(0, argument.getText(), argument.getLineNumber(), argument.getColumnNumber()), getSourceUnit());
{code}

> ability to add warnings from AST transformations
> ------------------------------------------------
>
>                 Key: GROOVY-7681
>                 URL: https://issues.apache.org/jira/browse/GROOVY-7681
>             Project: Groovy
>          Issue Type: Improvement
>    Affects Versions: 2.4.5
>            Reporter: Christopher Smith
>            Priority: Minor
>
> {{AbstractASTTransformation}} has a convenience method {{addError}} to attach an error to a particular node, such as an offending field, but it does not have a corresponding method to attach a warning. In examining the {{addWarning}} methods on {{ErrorCollector}}, it seems that {{WarningMessage}} makes the assumption that warnings can only happen on *CST* nodes; I couldn't find any way to register a warning that didn't have a CST location attached.
> I am trying to add a semantic warning if a transformation is asked to add a property that is explicitly declared but exactly matches the one that would be generated.



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