public static YamlNode Diff(this YamlNode node, YamlNode otherNode)
{
if (otherNode == null || node.NodeType != otherNode.NodeType || node.GetHashCode() == otherNode.GetHashCode())
{
return(null);
}
YamlNode result = null;
switch (node.NodeType)
{
case YamlNodeType.Mapping:
foreach (var keyValuePair in GetMappingChildrenDiff(((YamlMappingNode)node).Children,
((YamlMappingNode)otherNode).Children).Concat(
GetMappingChildrenDiff(((YamlMappingNode)otherNode).Children.
Where(kv => !((YamlMappingNode)node).Children.ContainsKey(kv.Key)),
((YamlMappingNode)node).Children)))
{
if (result == null)
{
result = new YamlMappingNode();
}
((YamlMappingNode)result).Children.Add(keyValuePair);
}
break;
case YamlNodeType.Scalar:
case YamlNodeType.Sequence:
result = otherNode.Clone();
break;
default:
throw new ArgumentOutOfRangeException();
}
return(result);
}
