Christopher Smith created GROOVY-7677:
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Summary: AbstractASTTransformation member-value methods should
traverse compile-time constants
Key: GROOVY-7677
URL: https://issues.apache.org/jira/browse/GROOVY-7677
Project: Groovy
Issue Type: Improvement
Components: groovy-jdk
Affects Versions: 2.4.5
Reporter: Christopher Smith
As described [in Cédric's article on parameterized
transformations|https://melix.github.io/ast-workshop/exercise4-hints.html], the
value of an annotation member during a transformation can be one of several
types of expression. The {{AbstractASTTransformation}} class provides a number
of methods that "get member values", but only if those values are provided as
an *immediate* {{ConstantExpression}}.
Using, for example, a {{public static final String}} as an annotation value is
perfectly legitimate, and the current implementation simply treats the value as
if it were not present. While it would be some work, I suggest that the
behavior of these methods should be enhanced to both traverse property/variable
expressions and support retrieval of annotation default values.
If this is agreeable and there's no identifiable technical reason why this
isn't feasible, then I'll attempt to implement at least part of the behavior as
part of [my blog series|https://blog.chrylis.com/2015/11/13/introducing-gjt/]
and would like to explore merging it into the main distribution.
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