--- /dev/null
+package edu.berkeley.sbp.meta;
+
+import edu.berkeley.sbp.util.*;
+import edu.berkeley.sbp.*;
+import edu.berkeley.sbp.chr.*;
+import edu.berkeley.sbp.misc.*;
+import edu.berkeley.sbp.bind.*;
+import java.util.*;
+import java.lang.annotation.*;
+import java.lang.reflect.*;
+import java.io.*;
+
+public class ArrayBuildingTreeFunctor<T> implements Tree.TreeFunctor<T,T[]>, ToJava {
+
+ public void toJava(StringBuffer sb) { sb.append("new ArrayBuildingTreeFunctor()"); }
+ public String toString() { return ""; }
+
+ public T[] invoke(Iterable<Tree<T>> t) {
+ ArrayList ret = new ArrayList();
+ for(Tree tc : t) {
+ if (tc.head() != null && tc.head() instanceof Functor)
+ ret.add(((Functor<Iterable<Tree>,Object>)tc.head()).invoke(tc.children()));
+ else if (tc.numChildren() == 0)
+ ret.add(tc.head());
+ else {
+ System.err.println("FIXME: don't know what to do about " + tc);
+ ret.add(null);
+ }
+ }
+ return (T[])ret.toArray(new Object[0]);
+ }
+}