[
https://issues.apache.org/jira/browse/GROOVY-9518?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17088430#comment-17088430
]
Mauro Molinari commented on GROOVY-9518:
----------------------------------------
Please note closure argument types are not inferred even if I try to help the
static type checker in this way:
{code:groovy}
Test64J j = new Test64J('hello', { foo, bar ->
println(bar.size())
} as BiConsumer<String, ? super List<Integer>>)
{code}
In this case, the Groovy Eclipse Plugin (by [~emilles]) infers {{foo}} and
{{bar}} types correctly, but then still fails on the {{println}} call probably
because the Groovy static type checker fails.
> Closure argument types not inferred when calling a constructor
> --------------------------------------------------------------
>
> Key: GROOVY-9518
> URL: https://issues.apache.org/jira/browse/GROOVY-9518
> Project: Groovy
> Issue Type: Bug
> Components: Static Type Checker
> Affects Versions: 2.5.11
> Reporter: Mauro Molinari
> Priority: Major
>
> Consider this Java class:
> {code:java}
> package test64;
> import java.util.List;
> import java.util.function.BiConsumer;
> public class Test64J<Integer> {
> public Test64J(String foo, BiConsumer<String, ? super List<Integer>>
> bar) {
> }
>
> public void doSomething(String foo, BiConsumer<String, ? super
> List<Integer>> bar) {
> }
> }
> {code}
> and this Groovy class:
> {code:groovy}
> package test64
> import groovy.transform.CompileStatic
> @CompileStatic
> class Test64 {
> void foobar() {
> Test64J j = new Test64J('hello', { foo, bar ->
> println(bar.size())
> })
>
> j.doSomething('hello') { foo, bar ->
> println(bar.size())
> }
> }
> }
> {code}
> The static type checker fails to infer types for {{foo}} and {{bar}} closure
> arguments in the constructor call (hence compilation fails on the first
> {{println}} call, because it does not know {{bar}} is a {{List}}), while it
> succeeds to do the same thing in the method call.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
