static ParsedQueryNode Traverse(ParsedQueryNode node, ParsedQueryNodeVisitorLookup visitor, ParsedQueryNode parent)
{
if (node == null) return null;
if (node.GetType() == typeof (ParsedQuery))
{
var query = node.As<ParsedQuery>();
node = new ParsedQuery(query.Fields.Select(n => Traverse(n, visitor, node)).ToArray());
}
if (node.GetType() == typeof (ParsedField))
{
var field = node.As<ParsedField>();
node = new ParsedField(
field.Value,
field.Alias,
field.Parameters.Select(n => Traverse(n, visitor, node)).ToArray(),
field.Fields.Select(n => Traverse(n, visitor, node)).ToArray());
}
if (node.GetType() == typeof (ParsedArgument))
{
var arg = node.As<ParsedArgument>();
node = new ParsedArgument(arg.Name, Traverse(arg.Value, visitor, node));
}
return visitor.Lookup(node.GetType()).Visit(node, parent);
}
public ParsedField(string value, string @alias, ParsedQueryNode[] parameters, ParsedQueryNode[] fields)
{
Value = value;
Alias = alias;
Parameters = parameters;
Fields = fields;
}
public ParsedQuery(ParsedQueryNode[] fields)
{
Fields = fields;
}
public static ParsedQueryNode Traverse(ParsedQueryNode node, ParsedQueryNodeVisitorLookup visitor)
{
return Traverse(node, visitor, null);
}
public ParsedQueryNode Visit(ParsedQueryNode node, ParsedQueryNode parent)
{
return node;
}
public ParsedQueryNode Visit(ParsedQueryNode node, ParsedQueryNode parent)
{
var field = node.As<ParsedField>();
schemaCursor.MoveToChild(field.Name);
queryTreeCursor.Current = queryTreeCursor.Current.Branch(schemaCursor.Current)
}
public ParsedArgument(string name, ParsedQueryNode value)
{
Name = name;
Value = value;
}