[jira] [Created] (GROOVY-7789) ClosureParams type inference compilation error when wrapping closure with object

["Krzysztof Białek (JIRA)" <ji...@apache.org>]

Krzysztof Białek created GROOVY-7789:
----------------------------------------

             Summary: ClosureParams type inference compilation error when wrapping closure with object
                 Key: GROOVY-7789
                 URL: https://issues.apache.org/jira/browse/GROOVY-7789
             Project: Groovy
          Issue Type: Bug
          Components: Static compilation
    Affects Versions: 2.4.6
            Reporter: Krzysztof Białek


The following code does not compile:
{code}
import groovy.transform.*
import groovy.transform.stc.*

@CompileStatic
class Test {

    class A<IN> {
        Closure c

        A(@ClosureParams(value = FromString, options = 'IN') Closure c) {
            this.c = c
        }

        void call(IN param) {
            c.call(param)
        }
    }

    def <IN> A wrap(@ClosureParams(value = FromString, options = 'IN') Closure c) {
        new A<IN>(c)
    }

    def test() {
        (wrap { i -> i.size() }).call([])
    }

}
{code}

Compilation error:
{code}
org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
/tmp/groovy-2.4.6/test.groovy: 25: [Static type checking] - Cannot find matching method java.lang.Object#size(). Please check if the declared type is right and if the method exists.
 @ line 24, column 22.
           (wrap { i -> i.size() }).call([])
{code}

I'd expect 'i' being infered as java.util.List
Explicit this.<List>wrap does not help neither



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