Added subFrom (which is the inverse of addTo)

src/builder/resources/speiger/assets/collections/templates/maps/impl/tree/RBTreeMap.template

@@ -341,6 +341,30 @@ public class RB_TREE_MAP KEY_VALUE_GENERIC_TYPE extends ABSTRACT_MAP KEY_VALUE_G
 		return getDefaultReturnValue();
 	}
 	
+	@Override
+	public VALUE_TYPE subFrom(KEY_TYPE key, VALUE_TYPE value) {
+		if(tree == null) return getDefaultReturnValue();
+		int compare = 0;
+		Node KEY_VALUE_GENERIC_TYPE parent = tree;
+		while(true) {
+			if((compare = compare(key, parent.key)) == 0)
+			{
+				VALUE_TYPE oldValue = parent.subFrom(value);
+				if(value < 0 ? (parent.value >= getDefaultReturnValue()) : (parent.value <= getDefaultReturnValue())) removeNode(parent);
+				return oldValue;
+			}
+			if(compare < 0) {
+				if(parent.left == null) break;
+				parent = parent.left;
+			}
+			else if(compare > 0) {
+				if(parent.right == null) break;
+				parent = parent.right;
+			}
+		}
+		return getDefaultReturnValue();
+	}
+	
 #endif
 	@Override
 	public VALUE_TYPE putAndMoveToFirst(KEY_TYPE key, VALUE_TYPE value) { throw new UnsupportedOperationException(); }
@@ -1659,6 +1683,12 @@ public class RB_TREE_MAP KEY_VALUE_GENERIC_TYPE extends ABSTRACT_MAP KEY_VALUE_G
 			return map.addTo(key, value);
 		}
 		
+		@Override
+		public VALUE_TYPE subFrom(KEY_TYPE key, VALUE_TYPE value) {
+			if(!inRange(key)) throw new IllegalArgumentException("key out of range");
+			return map.subFrom(key, value);
+		}
+		
 #endif
 #if TYPE_OBJECT
 		@Override
@@ -2730,6 +2760,12 @@ public class RB_TREE_MAP KEY_VALUE_GENERIC_TYPE extends ABSTRACT_MAP KEY_VALUE_G
 			this.value += value;
 			return oldValue;
 		}
+
+		VALUE_TYPE subFrom(VALUE_TYPE value) {
+			VALUE_TYPE oldValue = this.value;
+			this.value -= value;
+			return oldValue;
+		}
 		
 #endif
 		@Override