In r73 of http://buildfarm.st.ewi.tudelft.nl/ptg/repos/Gamestile/Gamestile we get the following compile failure:

/home/sverre/TUDelft/MDSD/Gamestile/.servletapp/build.xml:57: warning: 'includeantruntime' was not set, defaulting to build.sysclasspath=last; set to false for repeatable builds  
Compiling 12 source files to /home/sverre/TUDelft/MDSD/Gamestile/.servletapp/bin/WEB-INF/classes  
/home/sverre/TUDelft/MDSD/Gamestile/.servletapp/src-generated/exampleapp/domain/Dominoes.java:656: illegal start of expression  
      return (java.util.List)org.webdsl.tools.Utils.cast((_activePlayer >= 0 && _activePlayer < _hands.size() ? _hands.get(_activePlayer) : null).setupForPropertyEvents(hibSession, out).getStones(), java.util.List.class);  
                                                                                                                                                                                                                                                                         ^  
/home/sverre/TUDelft/MDSD/Gamestile/.servletapp/src-generated/exampleapp/domain/Dominoes.java:656: ';' expected  
      return (java.util.List)org.webdsl.tools.Utils.cast((_activePlayer >= 0 && _activePlayer < _hands.size() ? _hands.get(_activePlayer) : null).setupForPropertyEvents(hibSession, out).getStones(), java.util.List.class);  
                                                                                                                                                                                                                                                                          ^  
/home/sverre/TUDelft/MDSD/Gamestile/.servletapp/src-generated/exampleapp/domain/Dominoes.java:656: illegal start of expression  
      return (java.util.List)org.webdsl.tools.Utils.cast((_activePlayer >= 0 && _activePlayer < _hands.size() ? _hands.get(_activePlayer) : null).setupForPropertyEvents(hibSession, out).getStones(), java.util.List.class);  
                                                                                                                                                                                                                                                                               ^  
3 errors

Btw, the generated code looks a bit odd to us, in particular the : null in the ?: construct is asking for a NPE at some point.

Further inspection shows that the following fragment is responsible for the death and despair below:

function getSelectorChoices() : List<Choice> {
            // type of v is List<DominoesStone>, with DominoesStone being a subclass of Choice
	var v := hands[activePlayer].stones;
	var w := v as List<Choice>;
	return v;
}

/home/sverre/TUDelft/MDSD/Gamestile/.servletapp/src-generated/exampleapp/domain/Dominoes.java:657: illegal start of expression  
      java.util.List Dominoes_w0 = (java.util.List)org.webdsl.tools.Utils.cast(Dominoes_v0, java.util.List.class);  
                                                                                                                                                                                        ^  
/home/sverre/TUDelft/MDSD/Gamestile/.servletapp/src-generated/exampleapp/domain/Dominoes.java:657: ';' expected  
      java.util.List Dominoes_w0 = (java.util.List)org.webdsl.tools.Utils.cast(Dominoes_v0, java.util.List.class);  
                                                                                                                                                                                         ^  
/home/sverre/TUDelft/MDSD/Gamestile/.servletapp/src-generated/exampleapp/domain/Dominoes.java:657: illegal start of expression  
      java.util.List Dominoes_w0 = (java.util.List)org.webdsl.tools.Utils.cast(Dominoes_v0, java.util.List.class);  

Submitted by Sverre Rabbelier on 23 March 2010 at 20:32

Workaround:

function getSelectorChoices() : List<Choice> {
	var v := hands[activePlayer].stones;
	var w : List<Choice>;
	w.addAll(v);
	return w;
}