Bugzilla – Full Text Bug Listing
| Summary: | [Xtend2] Cant use a Closure as Method Parameter | ||
|---|---|---|---|
| Product: | [Modeling] TMF | Reporter: | patrick.lehmann |
| Component: | Xtext | Assignee: | Project Inbox <tmf.xtext-inbox> |
| Status: | CLOSED FIXED | QA Contact: | |
| Severity: | normal | ||
| Priority: | P3 | CC: | sebastian.zarnekow |
| Version: | 2.2.0 | Flags: | sebastian.zarnekow:
kepler+
|
| Target Milestone: | M6 | ||
| Hardware: | Macintosh | ||
| OS: | Mac OS X - Carbon (unsup.) | ||
| Whiteboard: | |||
Workaround: use Functions$Function1<Property,Boolean> as Type of the Closure Resolved.
Produced Java code is
import java.util.ArrayList;
import java.util.List;
import org.eclipse.xtext.xbase.lib.Functions.Function1;
import org.eclipse.xtext.xbase.lib.IterableExtensions;
@SuppressWarnings("all")
public class XtendCheck {
public void test() {
ArrayList<String> _arrayList = new ArrayList<String>();
final ArrayList<String> foos = _arrayList;
final Function1<String,Boolean> _function = new Function1<String,Boolean>() {
public Boolean apply(final String s) {
boolean _isEmpty = s.isEmpty();
return Boolean.valueOf(_isEmpty);
}
};
this.expand(foos, _function);
}
public void expand(final List<String> list, final Function1<? super String,? extends Boolean> filter) {
final Iterable<String> filteredList = IterableExtensions.<String>filter(list, (Function1<? super String,Boolean>)filter);
}
}
Requested via bug 522520. -M. Requested via bug 522520. -M. |
Build Identifier: Build id: 20110916-0149 Defining a closure as a parameter of a method leads to a compile error in the generated java code. Reproducible: Always Steps to Reproduce: Sample Xtend2 File: import java.util.ArrayList import java.util.List class XtendCheck { def test() { val foos = new ArrayList<String>() // add some Foos foos.expand(s|s.empty) } def expand(List<String> list, (String) => Boolean filter) { val filteredList = list.filter(filter) } } Error: The parameterized method <String>filter(Iterable<String>, Functions.Function1<? super String,Boolean>) of type IterableExtensions is not applicable for the arguments (List<String>, Functions.Function1<capture#5-of ? super String,capture#6-of ? extends Boolean>)