private ParseTree Extend(ParseTree other, bool justFields)
{
if (other == No)
throw new NotSupportedException("Should not extend from ParseTree.No");
if (this == No)
throw new NotSupportedException("ParseTree.No is read only");
ParseTree tree = this;
if (!justFields)
{
single = false;
if ((other.nodes != null) && (other.nodes.Count > 0))
{
if (tree == ParseTree.Yes)
tree = new ParseTree();
if (tree.nodes == null)
tree.nodes = new List<object>();
tree.nodes.AddRange(other.nodes);
}
}
if ((other.fields != null) && (other.fields.Count > 0))
{
if (tree == ParseTree.Yes)
tree = new ParseTree();
if (tree.fields == null)
tree.fields = new Dictionary<string, object>();
foreach (KeyValuePair<string, object> field in other.fields)
tree.fields[field.Key] = field.Value;
}
return tree;
}
public ParseTree ExtendFields(ParseTree other)
{
return Extend(other, true);
}
public ParseTree Extend(ParseTree other)
{
return Extend(other, false);
}
