protected override IAstTreeNode Xform(ExpressionNode node)
{
foreach (var child in node.Children)
{
var childExpression = child as ExpressionNode;
if (childExpression != null &&
node.OpCode == childExpression.OpCode &&
node.GetArity() == Arity.BinaryPlus)
{
var clone = (ExpressionNode)node.Clone();
clone.Children.RemoveAll(cchild => cchild.Id == child.Id);
clone.Children.AddRange(child.Children);
return clone;
}
}
return null;
}