Fixed a bunch of Iterator code and implemented Reverse Map/Set Tests

.classpath

@@ -32,7 +32,7 @@
 			<attribute name="gradle_used_by_scope" value="builder"/>
 		</attributes>
 	</classpathentry>
-	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-21/"/>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8/"/>
 	<classpathentry kind="con" path="org.eclipse.buildship.core.gradleclasspathcontainer"/>
 	<classpathentry kind="output" path="bin/default"/>
 </classpath>

src/builder/resources/speiger/assets/collections/templates/maps/abstracts/AbstractMap.template

@@ -51,7 +51,7 @@ import speiger.src.collections.utils.SanityChecks;
  */
 public abstract class ABSTRACT_MAP KEY_VALUE_GENERIC_TYPE extends AbstractMap<CLASS_TYPE, CLASS_VALUE_TYPE> implements MAP KEY_VALUE_GENERIC_TYPE
 {
-	protected VALUE_TYPE defaultReturnValue = EMPTY_VALUE;
+	protected VALUE_TYPE defaultReturnValue = INVALID_VALUE;
 	
 	@Override
 	public VALUE_TYPE getDefaultReturnValue() {
@@ -558,7 +558,13 @@ public abstract class ABSTRACT_MAP KEY_VALUE_GENERIC_TYPE extends AbstractMap<CL
 		public REVERSED_ORDERED_MAP(ORDERED_MAP KEY_VALUE_GENERIC_TYPE map) {
 			this.map = map;
 		}
-		
+		@Override
+		public ABSTRACT_MAP KEY_VALUE_GENERIC_TYPE setDefaultReturnValue(VALUE_TYPE v) {
+			map.setDefaultReturnValue(v);
+			return this;
+		}
+		@Override
+		public VALUE_TYPE getDefaultReturnValue() { return map.getDefaultReturnValue(); }
 		@Override
 		public ORDERED_MAP KEY_VALUE_GENERIC_TYPE copy() { throw new UnsupportedOperationException(); }
 		@Override

src/builder/resources/speiger/assets/collections/templates/maps/impl/customHash/LinkedOpenCustomHashMap.template

@@ -754,7 +754,7 @@ public class LINKED_CUSTOM_HASH_MAP KEY_VALUE_GENERIC_TYPE extends CUSTOM_HASH_M
 		
 		@Override
 		public ObjectBidirectionalIterator<MAP.Entry KEY_VALUE_GENERIC_TYPE> reverseIterator() {
-			return new ReverseBiIterator<>(new EntryIterator(false));
+			return new EntryIterator(false);
 		}
 		
 		@Override
@@ -1023,7 +1023,7 @@ public class LINKED_CUSTOM_HASH_MAP KEY_VALUE_GENERIC_TYPE extends CUSTOM_HASH_M
 		
 		@Override
 		public LIST_ITERATOR KEY_GENERIC_TYPE reverseIterator() {
-			return new ReverseBiIteratorBRACES(new KeyIterator(false));
+			return new KeyIterator(false);
 		}
 		
 		@Override
@@ -1224,7 +1224,7 @@ public class LINKED_CUSTOM_HASH_MAP KEY_VALUE_GENERIC_TYPE extends CUSTOM_HASH_M
 		@Override
 		public VALUE_ORDERED_COLLECTION VALUE_GENERIC_TYPE reversed() { return new VALUE_ABSTRACT_COLLECTION.VALUE_REVERSED_ORDERED_COLLECTIONVALUE_BRACES(this, this::reverseIterator); }
 		private VALUE_ITERATOR VALUE_GENERIC_TYPE reverseIterator() {
-			return new VALUE_ABSTRACT_COLLECTION.ReverseBiIteratorVALUE_BRACES(new ValueIterator(false));
+			return new ValueIterator(false);
 		}
 		@Override
 		public void addFirst(VALUE_TYPE e) { throw new UnsupportedOperationException(); }
@@ -1490,17 +1490,20 @@ public class LINKED_CUSTOM_HASH_MAP KEY_VALUE_GENERIC_TYPE extends CUSTOM_HASH_M
 	}
 	
 	private class MapIterator {
+		boolean forward;
 		int previous = -1;
 		int next = -1;
 		int current = -1;
 		int index = 0;
 		
 		MapIterator(boolean start) {
+			this.forward = start;
 			if(start) next = firstIndex;
 			else previous = lastIndex;
 		}
 		
 		MapIterator(KEY_TYPE from) {
+			this.forward = true;
 			if(strategy.equals(from, EMPTY_KEY_VALUE)) {
 				if(containsNull) {
 					next = (int) links[nullIndex];
@@ -1528,11 +1531,11 @@ public class LINKED_CUSTOM_HASH_MAP KEY_VALUE_GENERIC_TYPE extends CUSTOM_HASH_M
 		}
 		
 		public boolean hasNext() {
-			return next != -1;
+			return (forward ? next : previous) != -1;
 		}
 
 		public boolean hasPrevious() {
-			return previous != -1;
+			return (forward ? previous : next) != -1;
 		}
 		
 		public int nextIndex() {
@@ -1592,20 +1595,30 @@ public class LINKED_CUSTOM_HASH_MAP KEY_VALUE_GENERIC_TYPE extends CUSTOM_HASH_M
 		
 		public int previousEntry() {
 			if(!hasPrevious()) throw new NoSuchElementException();
-			current = previous;
+			if(forward) moveBackwards();
-			previous = (int)(links[current] >> 32);
+			else moveForwards();
-			next = current;
 			if(index >= 0) index--;
 			return current;
 		}
 		
 		public int nextEntry() {
 			if(!hasNext()) throw new NoSuchElementException();
+			if(forward) moveForwards();
+			else moveBackwards();
+			if(index >= 0) index++;
+			return current;
+		}
+		
+		private void moveBackwards() {
+			current = previous;
+			previous = (int)(links[current] >> 32);
+			next = current;
+		}
+		
+		private void moveForwards() {
 			current = next;
 			next = (int)(links[current]);
 			previous = current;
-			if(index >= 0) index++;
-			return current;
 		}
 		
 		private void ensureIndexKnown() {

src/builder/resources/speiger/assets/collections/templates/maps/impl/hash/LinkedOpenHashMap.template

@@ -758,7 +758,7 @@ public class LINKED_HASH_MAP KEY_VALUE_GENERIC_TYPE extends HASH_MAP KEY_VALUE_G
 		
 		@Override
 		public ObjectBidirectionalIterator<MAP.Entry KEY_VALUE_GENERIC_TYPE> reverseIterator() {
-			return new ReverseBiIterator<>(new EntryIterator(false));
+			return new EntryIterator(false);
 		}
 		
 		@Override
@@ -1022,7 +1022,7 @@ public class LINKED_HASH_MAP KEY_VALUE_GENERIC_TYPE extends HASH_MAP KEY_VALUE_G
 		
 		@Override
 		public LIST_ITERATOR KEY_GENERIC_TYPE reverseIterator() {
-			return new ReverseBiIteratorBRACES(new KeyIterator(false));
+			return new KeyIterator(false);
 		}
 		
 		@Override
@@ -1225,7 +1225,7 @@ public class LINKED_HASH_MAP KEY_VALUE_GENERIC_TYPE extends HASH_MAP KEY_VALUE_G
 		@Override
 		public VALUE_ORDERED_COLLECTION VALUE_GENERIC_TYPE reversed() { return new VALUE_ABSTRACT_COLLECTION.VALUE_REVERSED_ORDERED_COLLECTIONVALUE_BRACES(this, this::reverseIterator); }
 		private VALUE_ITERATOR VALUE_GENERIC_TYPE reverseIterator() {
-			return new VALUE_ABSTRACT_COLLECTION.ReverseBiIteratorVALUE_BRACES(new ValueIterator(false));
+			return new ValueIterator(false);
 		}
 		@Override
 		public void addFirst(VALUE_TYPE e) { throw new UnsupportedOperationException(); }
@@ -1490,12 +1490,14 @@ public class LINKED_HASH_MAP KEY_VALUE_GENERIC_TYPE extends HASH_MAP KEY_VALUE_G
 	}
 	
 	private class MapIterator {
+		boolean forward;
 		int previous = -1;
 		int next = -1;
 		int current = -1;
 		int index = 0;
 		
 		MapIterator(boolean start) {
+			this.forward = start;
 			if(start) next = firstIndex;
 			else previous = lastIndex;
 		}
@@ -1528,11 +1530,11 @@ public class LINKED_HASH_MAP KEY_VALUE_GENERIC_TYPE extends HASH_MAP KEY_VALUE_G
 		}
 		
 		public boolean hasNext() {
-			return next != -1;
+			return (forward ? next : previous) != -1;
 		}
 
 		public boolean hasPrevious() {
-			return previous != -1;
+			return (forward ? previous : next) != -1;
 		}
 		
 		public int nextIndex() {
@@ -1592,20 +1594,30 @@ public class LINKED_HASH_MAP KEY_VALUE_GENERIC_TYPE extends HASH_MAP KEY_VALUE_G
 		
 		public int previousEntry() {
 			if(!hasPrevious()) throw new NoSuchElementException();
-			current = previous;
+			if(forward) moveBackwards();
-			previous = (int)(links[current] >> 32);
+			else moveForwards();
-			next = current;
 			if(index >= 0) index--;
 			return current;
 		}
 		
 		public int nextEntry() {
 			if(!hasNext()) throw new NoSuchElementException();
+			if(forward) moveForwards();
+			else moveBackwards();
+			if(index >= 0) index++;
+			return current;
+		}
+		
+		private void moveBackwards() {
+			current = previous;
+			previous = (int)(links[current] >> 32);
+			next = current;
+		}
+		
+		private void moveForwards() {
 			current = next;
 			next = (int)(links[current]);
 			previous = current;
-			if(index >= 0) index++;
-			return current;
 		}
 		
 		private void ensureIndexKnown() {

src/builder/resources/speiger/assets/collections/templates/maps/impl/immutable/ImmutableOpenHashMap.template

@@ -664,7 +664,7 @@ public class IMMUTABLE_HASH_MAP KEY_VALUE_GENERIC_TYPE extends ABSTRACT_MAP KEY_
 		
 		@Override
 		public ObjectBidirectionalIterator<MAP.Entry KEY_VALUE_GENERIC_TYPE> reverseIterator() {
-			return new ReverseBiIterator<>(new EntryIterator(false));
+			return new EntryIterator(false);
 		}
 		
 		@Override
@@ -906,7 +906,7 @@ public class IMMUTABLE_HASH_MAP KEY_VALUE_GENERIC_TYPE extends ABSTRACT_MAP KEY_
 		
 		@Override
 		public LIST_ITERATOR KEY_GENERIC_TYPE reverseIterator() {
-			return new ReverseBiIteratorBRACES(new KeyIterator(false));
+			return new KeyIterator(false);
 		}
 		
 		@Override
@@ -1103,7 +1103,7 @@ public class IMMUTABLE_HASH_MAP KEY_VALUE_GENERIC_TYPE extends ABSTRACT_MAP KEY_
 		@Override
 		public VALUE_ORDERED_COLLECTION VALUE_GENERIC_TYPE reversed() { return new VALUE_ABSTRACT_COLLECTION.VALUE_REVERSED_ORDERED_COLLECTIONVALUE_BRACES(this, this::reverseIterator); }
 		private VALUE_ITERATOR VALUE_GENERIC_TYPE reverseIterator() {
-			return new VALUE_ABSTRACT_COLLECTION.ReverseBiIteratorVALUE_BRACES(new ValueIterator(false));
+			return new ValueIterator(false);
 		}
 		@Override
 		public void addFirst(VALUE_TYPE e) { throw new UnsupportedOperationException(); }
@@ -1356,12 +1356,14 @@ public class IMMUTABLE_HASH_MAP KEY_VALUE_GENERIC_TYPE extends ABSTRACT_MAP KEY_
 	}
 	
 	private class MapIterator {
+		boolean forward;
 		int previous = -1;
 		int next = -1;
 		int current = -1;
 		int index = 0;
 		
 		MapIterator(boolean start) {
+			this.forward = start;
 			if(start) next = firstIndex;
 			else previous = lastIndex;
 		}
@@ -1394,11 +1396,11 @@ public class IMMUTABLE_HASH_MAP KEY_VALUE_GENERIC_TYPE extends ABSTRACT_MAP KEY_
 		}
 		
 		public boolean hasNext() {
-			return next != -1;
+			return (forward ? next : previous) != -1;
 		}
 
 		public boolean hasPrevious() {
-			return previous != -1;
+			return (forward ? previous : next) != -1;
 		}
 		
 		public int nextIndex() {
@@ -1415,20 +1417,30 @@ public class IMMUTABLE_HASH_MAP KEY_VALUE_GENERIC_TYPE extends ABSTRACT_MAP KEY_
 		
 		public int previousEntry() {
 			if(!hasPrevious()) throw new NoSuchElementException();
-			current = previous;
+			if(forward) moveBackwards();
-			previous = (int)(links[current] >> 32);
+			else moveForwards();
-			next = current;
 			if(index >= 0) index--;
 			return current;
 		}
 		
 		public int nextEntry() {
 			if(!hasNext()) throw new NoSuchElementException();
+			if(forward) moveForwards();
+			else moveBackwards();
+			if(index >= 0) index++;
+			return current;
+		}
+		
+		private void moveBackwards() {
+			current = previous;
+			previous = (int)(links[current] >> 32);
+			next = current;
+		}
+		
+		private void moveForwards() {
 			current = next;
 			next = (int)(links[current]);
 			previous = current;
-			if(index >= 0) index++;
-			return current;
 		}
 		
 		private void ensureIndexKnown() {

src/builder/resources/speiger/assets/collections/templates/maps/impl/misc/ArrayMap.template

@@ -907,7 +907,7 @@ public class ARRAY_MAP KEY_VALUE_GENERIC_TYPE extends ABSTRACT_MAP KEY_VALUE_GEN
 		
 		@Override
 		public ObjectBidirectionalIterator<MAP.Entry KEY_VALUE_GENERIC_TYPE> reverseIterator() {
-			return new ReverseBiIterator<>(new EntryIterator(false));
+			return new EntryIterator(false);
 		}
 		
 		@Override
@@ -1129,7 +1129,7 @@ public class ARRAY_MAP KEY_VALUE_GENERIC_TYPE extends ABSTRACT_MAP KEY_VALUE_GEN
 		@Override
 		public LIST_ITERATOR KEY_GENERIC_TYPE iterator() { return new KeyIterator(true); }
 		@Override
-		public LIST_ITERATOR KEY_GENERIC_TYPE reverseIterator() { return new ReverseBiIteratorBRACES(new KeyIterator(false)); }
+		public LIST_ITERATOR KEY_GENERIC_TYPE reverseIterator() { return new KeyIterator(false); }
 		@Override
 		public BI_ITERATOR KEY_GENERIC_TYPE iterator(KEY_TYPE fromElement) { return new KeyIterator(fromElement); } 
 		@Override
@@ -1274,7 +1274,7 @@ public class ARRAY_MAP KEY_VALUE_GENERIC_TYPE extends ABSTRACT_MAP KEY_VALUE_GEN
 		@Override
 		public VALUE_ORDERED_COLLECTION VALUE_GENERIC_TYPE reversed() { return new VALUE_ABSTRACT_COLLECTION.VALUE_REVERSED_ORDERED_COLLECTIONVALUE_BRACES(this, this::reverseIterator); }
 		private VALUE_ITERATOR VALUE_GENERIC_TYPE reverseIterator() {
-			return new VALUE_ABSTRACT_COLLECTION.ReverseBiIteratorVALUE_BRACES(new ValueIterator(false));
+			return new ValueIterator(false);
 		}
 		@Override
 		public void addFirst(VALUE_TYPE e) { throw new UnsupportedOperationException(); }
@@ -1491,32 +1491,37 @@ public class ARRAY_MAP KEY_VALUE_GENERIC_TYPE extends ABSTRACT_MAP KEY_VALUE_GEN
 	}
 	
 	private class MapIterator {
+		boolean forward;
 		int index;
 		int lastReturned = -1;
 		
 		MapIterator(boolean start) {
+			this.forward = start;
 			this.index = start ? 0 : size;
 		}
 		
 		MapIterator(KEY_TYPE element) {
+			this.forward = true;
 			index = findIndex(element);
 			if(index == -1) throw new NoSuchElementException();
 		}
 		
 		public boolean hasNext() {
-			return index < size;
+			return forward ? index < size : index > 0;
 		}
 		
 		public boolean hasPrevious() {
-			return index > 0;
+			return forward ? index > 0 : index < size;
 		}
 		
 		public int nextIndex() {
-			return index;
+			if(forward) return index;
+			return size - index;
 		}
 		
 		public int previousIndex() {
-			return index-1;
+			if(forward) return index-1;
+			return (size - index)-1;
 		}
 		
 		public void remove() {
@@ -1529,26 +1534,42 @@ public class ARRAY_MAP KEY_VALUE_GENERIC_TYPE extends ABSTRACT_MAP KEY_VALUE_GEN
 		
 		public int previousEntry() {
 			if(!hasPrevious()) throw new NoSuchElementException();
+			if(forward) {
 				index--;
 				return (lastReturned = index);
 			}
-		
-		public int nextEntry() {
-			if(!hasNext()) throw new NoSuchElementException();
 			lastReturned = index;
 			return index++;
 		}
 		
+		public int nextEntry() {
+			if(!hasNext()) throw new NoSuchElementException();
+			if(forward) {
+				lastReturned = index;
+				return index++;
+			}
+			index--;
+			return (lastReturned = index);
+		}
+		
 		public int skip(int amount) {
 			if(amount < 0) throw new IllegalStateException("Negative Numbers are not allowed");
+			return forward ? moveForward(amount) : moveBackwards(amount);
+		}
+		
+		public int back(int amount) {
+			if(amount < 0) throw new IllegalStateException("Negative Numbers are not allowed");
+			return forward ? moveBackwards(amount) : moveForward(amount);
+		}
+		
+		private int moveForward(int amount) {
 			int steps = Math.min(amount, size() - index);
 			index += steps;
 			if(steps > 0) lastReturned = Math.min(index-1, size()-1);
 			return steps;
 		}
 		
-		public int back(int amount) {
+		private int moveBackwards(int amount) {
-			if(amount < 0) throw new IllegalStateException("Negative Numbers are not allowed");
 			int steps = Math.min(amount, index);
 			index -= steps;
 			if(steps > 0) lastReturned = Math.min(index, size()-1);

src/builder/resources/speiger/assets/collections/templates/sets/ArraySet.template

@@ -511,18 +511,18 @@ public class ARRAY_SET KEY_GENERIC_TYPE extends ABSTRACT_SET KEY_GENERIC_TYPE im
 	
 	@Override
 	public BI_ITERATOR KEY_GENERIC_TYPE iterator() {
-		return new SetIterator(0);
+		return new SetIterator(true, 0);
 	}
 	
 	@Override
 	public BI_ITERATOR KEY_GENERIC_TYPE reverseIterator() {
-		return new ReverseBiIteratorBRACES(new SetIterator(size));
+		return new SetIterator(false, size);
 	}
 	
 	@Override
 	public BI_ITERATOR KEY_GENERIC_TYPE iterator(KEY_TYPE fromElement) {
 		int index = findIndex(fromElement);
-		if(index != -1) return new SetIterator(index);
+		if(index != -1) return new SetIterator(true, index);
 		throw new NoSuchElementException();
 	}
 	
@@ -575,45 +575,57 @@ public class ARRAY_SET KEY_GENERIC_TYPE extends ABSTRACT_SET KEY_GENERIC_TYPE im
 	}
 		
 	private class SetIterator implements LIST_ITERATOR KEY_GENERIC_TYPE {
+		boolean forward;
 		int index;
 		int lastReturned = -1;
 		
-		public SetIterator(int index) {
+		public SetIterator(boolean forward, int index) {
+			this.forward = forward;
 			this.index = index;
 		}
 		
 		@Override
 		public boolean hasNext() {
-			return index < size();
+			return forward ? index < size() : index > 0;
 		}
 		
 		@Override
 		public KEY_TYPE NEXT() {
 			if(!hasNext()) throw new NoSuchElementException();
+			if(forward) {
 				lastReturned = index;
 				return data[index++];				
 			}
+			index--;
+			return data[(lastReturned = index)];
+		}
 		
 		@Override
 		public boolean hasPrevious() {
-			return index > 0;
+			return forward ? index > 0 : index < size();
 		}
 		
 		@Override
 		public KEY_TYPE PREVIOUS() {
 			if(!hasPrevious()) throw new NoSuchElementException();
-			--index;
+			if(forward) {
+				index--;
 				return data[(lastReturned = index)];
 			}
+			lastReturned = index;
+			return data[index++];
+		}
 		
 		@Override
 		public int nextIndex() {
-			return index;
+			if(forward) return index;
+			return size - index;
 		}
 		
 		@Override
 		public int previousIndex() {
-			return index-1;
+			if(forward) return index-1;
+			return (size - index)-1;
 		}
 		
 		@Override
@@ -642,15 +654,23 @@ public class ARRAY_SET KEY_GENERIC_TYPE extends ABSTRACT_SET KEY_GENERIC_TYPE im
 		@Override
 		public int skip(int amount) {
 			if(amount < 0) throw new IllegalStateException("Negative Numbers are not allowed");
+			return forward ? moveForward(amount) : moveBackwards(amount);
+		}
+		
+		@Override
+		public int back(int amount) {
+			if(amount < 0) throw new IllegalStateException("Negative Numbers are not allowed");
+			return forward ? moveBackwards(amount) : moveForward(amount);
+		}
+		
+		private int moveForward(int amount) {
 			int steps = Math.min(amount, size() - index);
 			index += steps;
 			if(steps > 0) lastReturned = Math.min(index-1, size()-1);
 			return steps;
 		}
 		
-		@Override
+		private int moveBackwards(int amount) {
-		public int back(int amount) {
-			if(amount < 0) throw new IllegalStateException("Negative Numbers are not allowed");
 			int steps = Math.min(amount, index);
 			index -= steps;
 			if(steps > 0) lastReturned = Math.min(index, size()-1);

src/builder/resources/speiger/assets/collections/templates/sets/ImmutableOpenHashSet.template

@@ -460,7 +460,7 @@ public class IMMUTABLE_HASH_SET KEY_GENERIC_TYPE extends ABSTRACT_SET KEY_GENERI
 	
 	@Override
 	public LIST_ITERATOR KEY_GENERIC_TYPE reverseIterator() {
-		return new ReverseBiIteratorBRACES(new SetIterator(false));
+		return new SetIterator(false);
 	}
 	
 	@Override
@@ -526,17 +526,20 @@ public class IMMUTABLE_HASH_SET KEY_GENERIC_TYPE extends ABSTRACT_SET KEY_GENERI
 	}
 
 	private class SetIterator implements LIST_ITERATOR KEY_GENERIC_TYPE {
+		boolean forward;
 		int previous = -1;
 		int next = -1;
 		int current = -1;
-		int index = 0;
+		int index = -1;
 		
 		SetIterator(boolean start) {
+			this.forward = start;
 			if(start) next = firstIndex;
 			else previous = lastIndex;
 		}
 		
 		SetIterator(KEY_TYPE from) {
+			this.forward = true;
 			if(KEY_EQUALS_NULL(from)) {
 				if(containsNull) {
 					next = (int) links[nullIndex];
@@ -565,48 +568,60 @@ public class IMMUTABLE_HASH_SET KEY_GENERIC_TYPE extends ABSTRACT_SET KEY_GENERI
 		
 		@Override
 		public int skip(int amount) {
-			int result = 0;
+			int result = forward ? moveForward(amount) : moveBackwards(amount);
-			while(next != -1 && result != amount) {
-				current = previous = next;
-				next = (int)(links[current]);
-				result++;
-			}
 			if(index >= 0) index+=result;
 			return result;
 		}
 		
 		@Override
 		public int back(int amount) {
+			int result = forward ? moveBackwards(amount) : moveForward(amount);
+			if(index >= 0) index-=result;
+			return result;
+		}
+		
+		private int moveForward(int amount) {
+			int result = 0;
+			while(next != -1 && result != amount) {
+				current = previous = next;
+				next = (int)(links[current]);
+				result++;
+			}
+			return result;
+		}
+		
+		private int moveBackwards(int amount) {
 			int result = 0;
 			while(previous != -1 && result != amount) {
 				current = next = previous;
 				previous = (int)(links[current] >> 32);
 				result++;
 			}
-			if(index >= 0) index-=result;
 			return result;
 		}
 		
 		@Override
 		public boolean hasNext() {
-			return next != -1;
+			return (forward ? next : previous) != -1;
 		}
 
 		@Override
 		public boolean hasPrevious() {
-			return previous != -1;
+			return (forward ? previous : next) != -1;
 		}
 		
 		@Override
 		public int nextIndex() {
 			ensureIndexKnown();
-			return index;
+			if(forward) return index;
+			return size - index;
 		}
 		
 		@Override
 		public int previousIndex() {
 			ensureIndexKnown();
-			return index - 1;
+			if(forward) return index-1;
+			return (size - index)-1;
 		}
 		
 		@Override
@@ -615,8 +630,8 @@ public class IMMUTABLE_HASH_SET KEY_GENERIC_TYPE extends ABSTRACT_SET KEY_GENERI
 		@Override
 		public KEY_TYPE PREVIOUS() {
 			if(!hasPrevious()) throw new NoSuchElementException();
-			current = next = previous;
+			if(forward) moveBackwards();
-			previous = (int)(links[current] >> 32);
+			else moveForwards();
 			if(index >= 0) index--;
 			return keys[current];
 		}
@@ -624,12 +639,22 @@ public class IMMUTABLE_HASH_SET KEY_GENERIC_TYPE extends ABSTRACT_SET KEY_GENERI
 		@Override
 		public KEY_TYPE NEXT() {
 			if(!hasNext()) throw new NoSuchElementException();
-			current = previous = next;
+			if(forward) moveForwards();
-			next = (int)(links[current]);
+			else moveBackwards();
 			if(index >= 0) index++;
 			return keys[current];
 		}
 		
+		private void moveBackwards() {
+			current = next = previous;
+			previous = (int)(links[current] >> 32);
+		}
+		
+		private void moveForwards() {
+			current = previous = next;
+			next = (int)(links[current]);
+		}
+		
 		private void ensureIndexKnown() {
 			if(index == -1) {
 				if(previous == -1) {

src/builder/resources/speiger/assets/collections/templates/sets/LinkedOpenCustomHashSet.template

@@ -702,7 +702,7 @@ public class LINKED_CUSTOM_HASH_SET KEY_GENERIC_TYPE extends CUSTOM_HASH_SET KEY
 	
 	@Override
 	public LIST_ITERATOR KEY_GENERIC_TYPE reverseIterator() {
-		return new ReverseBiIteratorBRACES(new SetIterator(false));
+		return new SetIterator(false);
 	}
 	
 	@Override
@@ -727,17 +727,20 @@ public class LINKED_CUSTOM_HASH_SET KEY_GENERIC_TYPE extends CUSTOM_HASH_SET KEY
 	}
 	
 	private class SetIterator implements LIST_ITERATOR KEY_GENERIC_TYPE {
+		boolean forward;
 		int previous = -1;
 		int next = -1;
 		int current = -1;
-		int index = 0;
+		int index = -1;
 		
 		SetIterator(boolean start) {
+			this.forward = start;
 			if(start) next = firstIndex;
 			else previous = lastIndex;
 		}
 		
 		SetIterator(KEY_TYPE from) {
+			this.forward = true;
 			if(strategy.equals(from, EMPTY_KEY_VALUE)) {
 				if(containsNull) {
 					next = (int) links[nullIndex];
@@ -766,48 +769,60 @@ public class LINKED_CUSTOM_HASH_SET KEY_GENERIC_TYPE extends CUSTOM_HASH_SET KEY
 		
 		@Override
 		public boolean hasNext() {
-			return next != -1;
+			return (forward ? next : previous) != -1;
 		}
 
 		@Override
 		public boolean hasPrevious() {
-			return previous != -1;
+			return (forward ? previous : next) != -1;
 		}
 		
 		@Override
 		public int skip(int amount) {
-			int result = 0;
+			int result = forward ? moveForward(amount) : moveBackwards(amount);
-			while(next != -1 && result != amount) {
-				current = previous = next;
-				next = (int)(links[current]);
-				result++;
-			}
 			if(index >= 0) index+=result;
 			return result;
 		}
 		
 		@Override
 		public int back(int amount) {
+			int result = forward ? moveBackwards(amount) : moveForward(amount);
+			if(index >= 0) index-=result;
+			return result;
+		}
+		
+		private int moveForward(int amount) {
+			int result = 0;
+			while(next != -1 && result != amount) {
+				current = previous = next;
+				next = (int)(links[current]);
+				result++;
+			}
+			return result;
+		}
+		
+		private int moveBackwards(int amount) {
 			int result = 0;
 			while(previous != -1 && result != amount) {
 				current = next = previous;
 				previous = (int)(links[current] >> 32);
 				result++;
 			}
-			if(index >= 0) index-=result;
 			return result;
 		}
 		
 		@Override
 		public int nextIndex() {
 			ensureIndexKnown();
-			return index;
+			if(forward) return index;
+			return size - index;
 		}
 		
 		@Override
 		public int previousIndex() {
 			ensureIndexKnown();
-			return index - 1;
+			if(forward) return index-1;
+			return (size - index)-1;
 		}
 		
 		@Override
@@ -856,8 +871,8 @@ public class LINKED_CUSTOM_HASH_SET KEY_GENERIC_TYPE extends CUSTOM_HASH_SET KEY
 		@Override
 		public KEY_TYPE PREVIOUS() {
 			if(!hasPrevious()) throw new NoSuchElementException();
-			current = next = previous;
+			if(forward) moveBackwards();
-			previous = (int)(links[current] >> 32);
+			else moveForwards();
 			if(index >= 0) index--;
 			return keys[current];
 		}
@@ -865,12 +880,22 @@ public class LINKED_CUSTOM_HASH_SET KEY_GENERIC_TYPE extends CUSTOM_HASH_SET KEY
 		@Override
 		public KEY_TYPE NEXT() {
 			if(!hasNext()) throw new NoSuchElementException();
-			current = previous = next;
+			if(forward) moveForwards();
-			next = (int)(links[current]);
+			else moveBackwards();
 			if(index >= 0) index++;
 			return keys[current];
 		}
 		
+		private void moveBackwards() {
+			current = next = previous;
+			previous = (int)(links[current] >> 32);
+		}
+		
+		private void moveForwards() {
+			current = previous = next;
+			next = (int)(links[current]);
+		}
+		
 		private void ensureIndexKnown() {
 			if(index == -1) {
 				if(previous == -1) {

src/builder/resources/speiger/assets/collections/templates/sets/LinkedOpenHashSet.template

@@ -673,7 +673,7 @@ public class LINKED_HASH_SET KEY_GENERIC_TYPE extends HASH_SET KEY_GENERIC_TYPE
 	
 	@Override
 	public LIST_ITERATOR KEY_GENERIC_TYPE reverseIterator() {
-		return new ReverseBiIteratorBRACES(new SetIterator(false));
+		return new SetIterator(false);
 	}
 	
 	@Override
@@ -698,17 +698,20 @@ public class LINKED_HASH_SET KEY_GENERIC_TYPE extends HASH_SET KEY_GENERIC_TYPE
 	}
 	
 	private class SetIterator implements LIST_ITERATOR KEY_GENERIC_TYPE {
+		boolean forward;
 		int previous = -1;
 		int next = -1;
 		int current = -1;
-		int index = 0;
+		int index = -1;
 		
 		SetIterator(boolean start) {
+			this.forward = start;
 			if(start) next = firstIndex;
 			else previous = lastIndex;
 		}
 		
 		SetIterator(KEY_TYPE from) {
+			this.forward = true;
 			if(KEY_EQUALS_NULL(from)) {
 				if(containsNull) {
 					next = (int) links[nullIndex];
@@ -737,48 +740,60 @@ public class LINKED_HASH_SET KEY_GENERIC_TYPE extends HASH_SET KEY_GENERIC_TYPE
 		
 		@Override
 		public int skip(int amount) {
-			int result = 0;
+			int result = forward ? moveForward(amount) : moveBackwards(amount);
-			while(next != -1 && result != amount) {
-				current = previous = next;
-				next = (int)(links[current]);
-				result++;
-			}
 			if(index >= 0) index+=result;
 			return result;
 		}
 		
 		@Override
 		public int back(int amount) {
+			int result = forward ? moveBackwards(amount) : moveForward(amount);
+			if(index >= 0) index-=result;
+			return result;
+		}
+		
+		private int moveForward(int amount) {
+			int result = 0;
+			while(next != -1 && result != amount) {
+				current = previous = next;
+				next = (int)(links[current]);
+				result++;
+			}
+			return result;
+		}
+		
+		private int moveBackwards(int amount) {
 			int result = 0;
 			while(previous != -1 && result != amount) {
 				current = next = previous;
 				previous = (int)(links[current] >> 32);
 				result++;
 			}
-			if(index >= 0) index-=result;
 			return result;
 		}
 		
 		@Override
 		public boolean hasNext() {
-			return next != -1;
+			return (forward ? next : previous) != -1;
 		}
 
 		@Override
 		public boolean hasPrevious() {
-			return previous != -1;
+			return (forward ? previous : next) != -1;
 		}
 		
 		@Override
 		public int nextIndex() {
 			ensureIndexKnown();
-			return index;
+			if(forward) return index;
+			return size - index;
 		}
 		
 		@Override
 		public int previousIndex() {
 			ensureIndexKnown();
-			return index - 1;
+			if(forward) return index-1;
+			return (size - index)-1;
 		}
 		
 		@Override
@@ -827,8 +842,8 @@ public class LINKED_HASH_SET KEY_GENERIC_TYPE extends HASH_SET KEY_GENERIC_TYPE
 		@Override
 		public KEY_TYPE PREVIOUS() {
 			if(!hasPrevious()) throw new NoSuchElementException();
-			current = next = previous;
+			if(forward) moveBackwards();
-			previous = (int)(links[current] >> 32);
+			else moveForwards();
 			if(index >= 0) index--;
 			return keys[current];
 		}
@@ -836,12 +851,22 @@ public class LINKED_HASH_SET KEY_GENERIC_TYPE extends HASH_SET KEY_GENERIC_TYPE
 		@Override
 		public KEY_TYPE NEXT() {
 			if(!hasNext()) throw new NoSuchElementException();
-			current = previous = next;
+			if(forward) moveForwards();
-			next = (int)(links[current]);
+			else moveBackwards();
 			if(index >= 0) index++;
 			return keys[current];
 		}
 		
+		private void moveBackwards() {
+			current = next = previous;
+			previous = (int)(links[current] >> 32);
+		}
+		
+		private void moveForwards() {
+			current = previous = next;
+			next = (int)(links[current]);
+		}
+		
 		private void ensureIndexKnown() {
 			if(index == -1) {
 				if(previous == -1) {

src/builder/resources/speiger/assets/testers/templates/builder/OrderedSetTestSuiteBuilder.template

@@ -1,16 +1,29 @@
 package speiger.src.testers.PACKAGE.builder;
 
+import java.util.ArrayList;
+import java.util.Collection;
 import java.util.List;
 
 import com.google.common.collect.testing.AbstractTester;
+import com.google.common.collect.testing.FeatureSpecificTestSuiteBuilder;
 import com.google.common.collect.testing.Helpers;
+import com.google.common.collect.testing.OneSizeTestContainerGenerator;
+import com.google.common.collect.testing.SampleElements;
 import com.google.common.collect.testing.features.CollectionFeature;
+import com.google.common.collect.testing.features.Feature;
 
 import junit.framework.TestSuite;
+import speiger.src.collections.PACKAGE.collections.ITERABLE;
+import speiger.src.collections.PACKAGE.lists.ARRAY_LIST;
+import speiger.src.collections.PACKAGE.lists.LIST;
+import speiger.src.collections.PACKAGE.sets.ORDERED_SET;
+import speiger.src.collections.PACKAGE.utils.LISTS;
 import speiger.src.testers.PACKAGE.generators.TEST_ORDERED_SET_GENERATOR;
 import speiger.src.testers.PACKAGE.tests.set.FILE_KEY_TYPEOrderedSetMoveTester;
 import speiger.src.testers.PACKAGE.tests.set.FILE_KEY_TYPEOrderedSetIterationTester;
 import speiger.src.testers.PACKAGE.tests.set.FILE_KEY_TYPEOrderedSetNavigationTester;
+import speiger.src.testers.PACKAGE.utils.SAMPLE_ELEMENTS;
+import speiger.src.testers.utils.SpecialFeature;
 
 @SuppressWarnings("javadoc")
 public class ORDERED_SET_TEST_BUILDER KEY_GENERIC_TYPE extends SET_TEST_BUILDER KEY_GENERIC_TYPE {
@@ -35,4 +48,68 @@ public class ORDERED_SET_TEST_BUILDER KEY_GENERIC_TYPE extends SET_TEST_BUILDER
 #endignore
 		return super.createTestSuite();
 	}
+	
+	@Override
+	protected List<TestSuite> createDerivedSuites(
+			FeatureSpecificTestSuiteBuilder<?, ? extends OneSizeTestContainerGenerator<Collection<CLASS_TYPE>, CLASS_TYPE>> parentBuilder) {
+		List<TestSuite> derivedSuites = super.createDerivedSuites(parentBuilder);
+
+		if (!parentBuilder.getFeatures().contains(SpecialFeature.REVERSE)) {
+			derivedSuites.add(createReverseSuite(parentBuilder));
+		}
+
+		return derivedSuites;
+	}
+
+	private TestSuite createReverseSuite(FeatureSpecificTestSuiteBuilder<?, ? extends OneSizeTestContainerGenerator<Collection<CLASS_TYPE>, CLASS_TYPE>> parentBuilder) {
+		TEST_ORDERED_SET_GENERATOR KEY_GENERIC_TYPE delegate = (TEST_ORDERED_SET_GENERATOR KEY_GENERIC_TYPE) parentBuilder.getSubjectGenerator().getInnerGenerator();
+
+		List<Feature<?>> features = new ArrayList<>();
+		features.add(SpecialFeature.REVERSE);
+		features.addAll(parentBuilder.getFeatures());
+		features.remove(SpecialFeature.COPYING);
+		features.remove(SpecialFeature.CHILDREN_COPY);
+		
+		return ORDERED_SET_TEST_BUILDER.using(new TEST_ORDERED_SET_GENERATOR KEY_GENERIC_TYPE() {
+			@Override
+			public SampleElements<CLASS_TYPE> samples() {
+				return delegate.samples();
+			}
+			
+			@Override
+			public SAMPLE_ELEMENTS KEY_GENERIC_TYPE getSamples() {
+				return delegate.getSamples();
+			}
+
+			@Override
+			public ITERABLE KEY_GENERIC_TYPE order(LIST KEY_GENERIC_TYPE insertionOrder) {
+				return insertionOrder;
+			}
+
+			@Override
+			public Iterable<CLASS_TYPE> order(List<CLASS_TYPE> insertionOrder) {
+				return insertionOrder;
+			}
+			
+#if !TYPE_OBJECT
+			@Override
+			public ORDERED_SET KEY_GENERIC_TYPE create(KEY_TYPE... elements) {
+				LIST KEY_GENERIC_TYPE list = new ARRAY_LISTBRACES(elements);
+				LISTS.reverse(list);
+				return delegate.create(list.TO_ARRAY()).reversed();
+			}
+			
+#endif
+			@Override
+			public ORDERED_SET KEY_GENERIC_TYPE create(Object... elements) {
+				LIST KEY_GENERIC_TYPE list = new ARRAY_LISTBRACES();
+				for (Object e : elements) {
+					list.add(CLASS_TO_KEY(e));
+				}
+				LISTS.reverse(list);
+				return delegate.create(list.toArray()).reversed();
+			}
+		}).named(parentBuilder.getName() + " reversing").withFeatures(features)
+				.suppressing(parentBuilder.getSuppressedTests()).createTestSuite();
+	}
 }

src/builder/resources/speiger/assets/testers/templates/builder/maps/MapTestSuiteBuilder.template

@@ -238,21 +238,17 @@ public class MAP_TEST_BUILDER KEY_VALUE_GENERIC_TYPE extends MapTestSuiteBuilder
 	private static Set<Feature<?>> computeEntrySetFeatures(Set<Feature<?>> mapFeatures) {
 		Set<Feature<?>> entrySetFeatures = MapTestSuiteBuilder.computeCommonDerivedCollectionFeatures(mapFeatures);
 #ignore
-		if (mapFeatures.contains(MapFeature.ALLOWS_NULL_ENTRY_QUERIES)) {
+		if (mapFeatures.contains(MapFeature.ALLOWS_NULL_ENTRY_QUERIES)) entrySetFeatures.add(CollectionFeature.ALLOWS_NULL_QUERIES);
-			entrySetFeatures.add(CollectionFeature.ALLOWS_NULL_QUERIES);
+
-		}
+		if(mapFeatures.contains(SpecialFeature.CHILDREN_COPY)) entrySetFeatures.add(SpecialFeature.COPYING);
-		if(mapFeatures.contains(SpecialFeature.CHILDREN_COPY)) {
+		else entrySetFeatures.remove(SpecialFeature.COPYING);
-			entrySetFeatures.add(SpecialFeature.COPYING);
+		
-		}
+		if(mapFeatures.contains(SpecialFeature.MODIFIABLE)) entrySetFeatures.add(SpecialFeature.MODIFIABLE);
-		else {
+		else entrySetFeatures.remove(SpecialFeature.MODIFIABLE);
-			entrySetFeatures.remove(SpecialFeature.COPYING);
+		
-		}
+		if(mapFeatures.contains(SpecialFeature.REVERSE)) entrySetFeatures.add(SpecialFeature.REVERSE);
-		if(mapFeatures.contains(SpecialFeature.MODIFIABLE)) {
+		else entrySetFeatures.remove(SpecialFeature.REVERSE);
-			entrySetFeatures.add(SpecialFeature.MODIFIABLE);
+		
-		}
-		else {
-			entrySetFeatures.remove(SpecialFeature.MODIFIABLE);
-		}
 		entrySetFeatures.add(SpecialFeature.MAP_ENTRY);
 #endignore
 		return entrySetFeatures;
@@ -262,23 +258,17 @@ public class MAP_TEST_BUILDER KEY_VALUE_GENERIC_TYPE extends MapTestSuiteBuilder
 		Set<Feature<?>> keySetFeatures = MapTestSuiteBuilder.computeCommonDerivedCollectionFeatures(mapFeatures);
 #ignore
 		keySetFeatures.add(CollectionFeature.SUBSET_VIEW);
-		if (mapFeatures.contains(MapFeature.ALLOWS_NULL_KEYS)) {
+		if (mapFeatures.contains(MapFeature.ALLOWS_NULL_KEYS)) keySetFeatures.add(CollectionFeature.ALLOWS_NULL_VALUES);
-			keySetFeatures.add(CollectionFeature.ALLOWS_NULL_VALUES);
+		else if (mapFeatures.contains(MapFeature.ALLOWS_NULL_KEY_QUERIES)) keySetFeatures.add(CollectionFeature.ALLOWS_NULL_QUERIES);
-		} else if (mapFeatures.contains(MapFeature.ALLOWS_NULL_KEY_QUERIES)) {
+		
-			keySetFeatures.add(CollectionFeature.ALLOWS_NULL_QUERIES);
+		if(mapFeatures.contains(SpecialFeature.CHILDREN_COPY)) keySetFeatures.add(SpecialFeature.COPYING);
-		}
+		else keySetFeatures.remove(SpecialFeature.COPYING);
-		if(mapFeatures.contains(SpecialFeature.CHILDREN_COPY)) {
+		
-			keySetFeatures.add(SpecialFeature.COPYING);
+		if(mapFeatures.contains(SpecialFeature.MODIFIABLE)) keySetFeatures.add(SpecialFeature.MODIFIABLE);
-		}
+		else keySetFeatures.remove(SpecialFeature.MODIFIABLE);
-		else {
+		
-			keySetFeatures.remove(SpecialFeature.COPYING);
+		if(mapFeatures.contains(SpecialFeature.REVERSE)) keySetFeatures.add(SpecialFeature.REVERSE);
-		}
+		else keySetFeatures.remove(SpecialFeature.REVERSE);
-		if(mapFeatures.contains(SpecialFeature.MODIFIABLE)) {
-			keySetFeatures.add(SpecialFeature.MODIFIABLE);
-		}
-		else {
-			keySetFeatures.remove(SpecialFeature.MODIFIABLE);
-		}
 #endignore
 		return keySetFeatures;
 	}
@@ -287,18 +277,15 @@ public class MAP_TEST_BUILDER KEY_VALUE_GENERIC_TYPE extends MapTestSuiteBuilder
 	private static Set<Feature<?>> computeValuesCollectionFeatures(Set<Feature<?>> mapFeatures) {
 		Set<Feature<?>> valuesCollectionFeatures = MapTestSuiteBuilder.computeCommonDerivedCollectionFeatures(mapFeatures);
 #ignore
-		if (mapFeatures.contains(MapFeature.ALLOWS_NULL_VALUE_QUERIES)) {
+		if (mapFeatures.contains(MapFeature.ALLOWS_NULL_VALUE_QUERIES)) valuesCollectionFeatures.add(CollectionFeature.ALLOWS_NULL_QUERIES);
-			valuesCollectionFeatures.add(CollectionFeature.ALLOWS_NULL_QUERIES);
+		
-		}
+		if (mapFeatures.contains(MapFeature.ALLOWS_NULL_VALUES)) valuesCollectionFeatures.add(CollectionFeature.ALLOWS_NULL_VALUES);
-		if (mapFeatures.contains(MapFeature.ALLOWS_NULL_VALUES)) {
+		
-			valuesCollectionFeatures.add(CollectionFeature.ALLOWS_NULL_VALUES);
+		if(mapFeatures.contains(SpecialFeature.CHILDREN_COPY)) valuesCollectionFeatures.add(SpecialFeature.COPYING); 
-		}
+		else valuesCollectionFeatures.remove(SpecialFeature.COPYING);
-		if(mapFeatures.contains(SpecialFeature.CHILDREN_COPY)) {
+		
-			valuesCollectionFeatures.add(SpecialFeature.COPYING);
+		if(mapFeatures.contains(SpecialFeature.REVERSE)) valuesCollectionFeatures.add(SpecialFeature.REVERSE);
-		}
+		else valuesCollectionFeatures.remove(SpecialFeature.REVERSE);
-		else {
-			valuesCollectionFeatures.remove(SpecialFeature.COPYING);
-		}
 #endignore
 		return valuesCollectionFeatures;
 	}

src/builder/resources/speiger/assets/testers/templates/builder/maps/OrderedMapTestSuiteBuilder.template

@@ -55,8 +55,8 @@ public class ORDERED_MAP_TEST_BUILDER KEY_VALUE_GENERIC_TYPE extends MAP_TEST_BU
 	@Override
 	protected List<TestSuite> createDerivedSuites(FeatureSpecificTestSuiteBuilder<?, ? extends OneSizeTestContainerGenerator<Map<CLASS_TYPE, CLASS_VALUE_TYPE>, Map.Entry<CLASS_TYPE, CLASS_VALUE_TYPE>>> parentBuilder) {
 		List<TestSuite> derivedSuites = super.createDerivedSuites(parentBuilder);
-		if (!parentBuilder.getFeatures().contains(SpecialFeature.DESCENDING)) {
+		if (!parentBuilder.getFeatures().contains(SpecialFeature.REVERSE)) {
-			derivedSuites.add(createDescendingSuite(parentBuilder));
+			derivedSuites.add(createReverseSuite(parentBuilder));
 		}
 		return derivedSuites;
 	}
@@ -69,15 +69,15 @@ public class ORDERED_MAP_TEST_BUILDER KEY_VALUE_GENERIC_TYPE extends MAP_TEST_BU
 		return ORDERED_SET_TEST_BUILDER.using((TEST_ORDERED_SET_GENERATOR KEY_GENERIC_TYPE)generator);
 	}
 	
-	private TestSuite createDescendingSuite(FeatureSpecificTestSuiteBuilder<?, ? extends OneSizeTestContainerGenerator<Map<CLASS_TYPE, CLASS_VALUE_TYPE>, Map.Entry<CLASS_TYPE, CLASS_VALUE_TYPE>>> parentBuilder) {
+	private TestSuite createReverseSuite(FeatureSpecificTestSuiteBuilder<?, ? extends OneSizeTestContainerGenerator<Map<CLASS_TYPE, CLASS_VALUE_TYPE>, Map.Entry<CLASS_TYPE, CLASS_VALUE_TYPE>>> parentBuilder) {
 		TEST_ORDERED_MAP_GENERATOR KEY_VALUE_GENERIC_TYPE delegate = (TEST_ORDERED_MAP_GENERATOR KEY_VALUE_GENERIC_TYPE) parentBuilder.getSubjectGenerator().getInnerGenerator();
 
 		List<Feature<?>> features = new ArrayList<>();
-		features.add(SpecialFeature.DESCENDING);
+		features.add(SpecialFeature.REVERSE);
 		features.addAll(parentBuilder.getFeatures());
 		features.remove(SpecialFeature.COPYING);
 		features.remove(SpecialFeature.CHILDREN_COPY);
-		return ORDERED_MAP_TEST_BUILDER.using(new DERIVED_MAP_GENERATORS.DescendingTestOrderedMapGeneratorKV_BRACES(delegate))
+		return ORDERED_MAP_TEST_BUILDER.using(new DERIVED_MAP_GENERATORS.ReverseTestOrderedMapGenerator(delegate))
 				.named(parentBuilder.getName() + " reversed").withFeatures(features)
 				.suppressing(parentBuilder.getSuppressedTests()).createTestSuite();
 	}

src/builder/resources/speiger/assets/testers/templates/impl/maps/DerivedMapGenerators.template

@@ -207,31 +207,19 @@ public class DERIVED_MAP_GENERATORS {
 		}
 	}
 	
-	public static class DescendingTestOrderedMapGenerator KEY_VALUE_GENERIC_TYPE extends MapGenerator KEY_VALUE_GENERIC_TYPE implements TEST_ORDERED_MAP_GENERATOR KEY_VALUE_GENERIC_TYPE {
+	public static class ReverseTestOrderedMapGenerator KEY_VALUE_GENERIC_TYPE extends MapGenerator KEY_VALUE_GENERIC_TYPE implements TEST_ORDERED_MAP_GENERATOR KEY_VALUE_GENERIC_TYPE {
 		TEST_ORDERED_MAP_GENERATOR KEY_VALUE_GENERIC_TYPE parent;
 		
-		public DescendingTestOrderedMapGenerator(TEST_ORDERED_MAP_GENERATOR KEY_VALUE_GENERIC_TYPE parent) {
+		public ReverseTestOrderedMapGenerator(TEST_ORDERED_MAP_GENERATOR KEY_VALUE_GENERIC_TYPE parent) {
 			super(parent);
 			this.parent = parent;
 		}
 		
 		@Override
 		public ORDERED_MAP KEY_VALUE_GENERIC_TYPE create(Entry KEY_VALUE_GENERIC_TYPE... elements) {
-			return ((ORDERED_MAP KEY_VALUE_GENERIC_TYPE)parent.create(elements)).reversed();
+			ObjectList<Entry KEY_VALUE_GENERIC_TYPE> entries = new ObjectArrayList<Entry KEY_VALUE_GENERIC_TYPE>(elements);
-		}
+			ObjectLists.reverse(entries);
-		
+			return ((ORDERED_MAP KEY_VALUE_GENERIC_TYPE)parent.create(entries.toArray(Entry[]::new))).reversed();
-		@Override
-		public Iterable<Map.Entry<CLASS_TYPE, CLASS_VALUE_TYPE>> order(List<Map.Entry<CLASS_TYPE, CLASS_VALUE_TYPE>> insertionOrder) {
-			ObjectList<Map.Entry<CLASS_TYPE, CLASS_VALUE_TYPE>> values = ObjectIterators.pour(ObjectIterators.wrap(parent.order(insertionOrder).iterator()));
-			ObjectLists.reverse(values);
-			return values;
-		}
-		
-		@Override
-		public ObjectIterable<Entry KEY_VALUE_GENERIC_TYPE> order(ObjectList<Entry KEY_VALUE_GENERIC_TYPE> insertionOrder) {
-			ObjectList<Entry KEY_VALUE_GENERIC_TYPE> values = parent.order(insertionOrder).pourAsList();
-			ObjectLists.reverse(values);
-			return values;
 		}
 	}
 	

src/test/java/speiger/src/testers/utils/SpecialFeature.java

@@ -18,6 +18,7 @@ public enum SpecialFeature implements Feature<Collection> {
 	ITERATOR_MODIFIABLE,
 	MAP_ENTRY,
 	DESCENDING,
+	REVERSE,
 	SUBMAP;
 
 	private final Set<Feature<? super Collection>> implied;