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https://issues.apache.org/jira/browse/GROOVY-8603?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16490423#comment-16490423
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Peter Schmitz commented on GROOVY-8603:
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I'd like to say no, but... yes, it is. :-/
> @CompileStatic: matching method check limited to 30 super classes
> -----------------------------------------------------------------
>
> Key: GROOVY-8603
> URL: https://issues.apache.org/jira/browse/GROOVY-8603
> Project: Groovy
> Issue Type: Bug
> Components: Static Type Checker
> Affects Versions: 2.3.11, 2.4.13, 2.5.0-rc-3
> Reporter: Peter Schmitz
> Priority: Major
> Labels: CompileStatic, Matching, extends, method, parameters,
> typecheck
>
> There is currently a maximum hierarchical depth for childclasses when using
> compile static.
> The compiler only searches for method parameters that match the provided
> class or up to 29 super classes. This in return means that the usable
> hierarchical depth is limited 29 child classes/distance from the root.
> Without CompileStatic this limit does not exists. Changing the following code
> to Java works too.
> This Code:
> {code:java}
> import groovy.transform.CompileStatic
> @CompileStatic
> class StaticTest {
> public static int getNummer( ZClassDepth0 instance ) {
> return instance.depth
> }
> public static void main( String[] args ) {
> println getNummer( new ZClassDepth29() ) //works
> println getNummer( new ZClassDepth30() ) //doesn't work
> }
> }
> {code}
> fails with the following execption:
> {code:java}
> Error:(13, 15) Groovyc: [Static type checking] - Cannot find matching method
> StaticTest#getNummer(ZClassDepth30). Please check if the declared type is
> right and if the method exists.
> {code}
>
> How the "ZClassDepth" files where generated:
> {code:java}
> import java.nio.file.Paths
> class Generator {
> public static void main( String[] args ) {
> def template = { int nummer ->
> return """\
> public class ZClassDepth${ nummer } ${ nummer > 0 ? "extends ZClassDepth${
> nummer - 1 }" : '' } {
> ${ nummer > 0 ? '@Override' : '' }
> public int getDepth() {
> return $nummer
> }
> }
> """
> }
> def path = Paths.get( '[PATH_TO_SOURCE]/src' )
> 101.times{ i ->
> new File( path.toFile(), "ZClassDepth${i}.groovy" ).text = template(
> i )
> }
> }
> }
> {code}
>
>
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