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Steps to reproduce: - Use Domainmodel example - Change implementation of body() to: body(Entity e) { ''' public class «e.name» «e.superTypeClause()»{ «e.features.map(f|f.feature).flatten» } ''' } This will lead to the following code: List<StringConcatenation> _map = ListExtensions.<Feature, StringConcatenation>map(_features, _function); Iterable<?> _flatten = IterableExtensions.flatten(_map); and this syntax error in the Java code: The method flatten(Iterable<? extends Iterable<? extends T>>) in the type IterableExtensions is not applicable for the arguments (List<StringConcatenation>)
What do you mean by 'implementation of body()'?. Which class are you referring to?
Previous versions of the Domainmodel example had a Xtend Rich String based code generator as example (which version was current in April last year?). I tried to reproduce it with the Fowler example. I get another error when I insert this into StatemachineGenerator.xtend#toJavaCode(Statemachine sm): «sm.commands.map(c|c.declareCommand).flatten» Incompatible receiver type. Expected java.lang.Iterable<? extends java.lang.Iterable<? extends T>> or java.lang.Iterable<? extends T>[] but was java.util.List<java.lang.CharSequence> "declareCommand" infers CharSequence as return type, thus I would expect that "sm.commands.map(c|c.declareCommand)" results into Iterable<CharSequence>, which should be a valid argument for the flatten() method.
(In reply to comment #2) > "declareCommand" infers CharSequence as return type, thus I would expect > that "sm.commands.map(c|c.declareCommand)" results into > Iterable<CharSequence>, which should be a valid argument for the flatten() > method. flatten is defined like this : public static <T> Iterable<T> flatten(Iterable<? extends Iterable<? extends T>> inputs) { So I'd say the error message is correct.
Right, did not think about that correctly. So I guess this was not checked properly before and was just compiled, which resulted in the uncompilable code. Thus, I'd consider this as fixed in the meantime.
Requested via bug 522520. -M.
