public static YamlNode Merge(this YamlNode node, YamlNode otherNode)
{
var resultNode = node.Clone();
if (otherNode == null || node.NodeType != otherNode.NodeType)
{
return(resultNode);
}
switch (node.NodeType)
{
case YamlNodeType.Mapping:
foreach (var mappingChild in ((YamlMappingNode)otherNode).Children)
{
if (((YamlMappingNode)resultNode).Children.ContainsKey(mappingChild.Key))
{
((YamlMappingNode)resultNode).Children[mappingChild.Key.Clone()] =
((YamlMappingNode)resultNode).Children[mappingChild.Key].Merge(mappingChild.Value);
}
else
{
((YamlMappingNode)resultNode).Children[mappingChild.Key.Clone()] = mappingChild.Value.Clone();
}
}
break;
case YamlNodeType.Scalar:
case YamlNodeType.Sequence:
resultNode = otherNode.Clone();
break;
default:
throw new ArgumentOutOfRangeException();
}
return(resultNode);
}
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);
}
public static YamlNode GetChildBranch(this YamlNode node, YamlNode child)
{
YamlNode result = null;
if (node == child)
{
result = node.Clone();
}
else if (node.NodeType == YamlNodeType.Mapping)
{
foreach (var mappingChild in ((YamlMappingNode)node).Children)
{
var childBranch = mappingChild.Value.GetChildBranch(child);
if (childBranch == null)
{
continue;
}
result = new YamlMappingNode();
((YamlMappingNode)result).Add(mappingChild.Key.Clone(), childBranch);
break;
}
}
return(result);
}
