/// <summary>
/// Returns a collection containing this element and all ancestor elements.
/// </summary>
public static IEnumerable <Chameleon.Parsing.ASTNode> AncestorsAndSelf(this Chameleon.Parsing.ASTNode item)
{
yield return(item);
foreach (var ancestor in item.Ancestors())
{
yield return(ancestor);
}
}
/// <summary>
/// Returns a collection of child elements.
/// </summary>
public static IEnumerable <Chameleon.Parsing.ASTNode> Elements(this Chameleon.Parsing.ASTNode item)
{
ILinqTree <Chameleon.Parsing.ASTNode> adapter = new Chameleon.Parsing.ASTNodeTreeAdapter(item);
foreach (var child in adapter.Children())
{
yield return(child);
}
}
/// <summary>
/// Returns a collection containing this element and all descendant elements.
/// </summary>
public static IEnumerable <Chameleon.Parsing.ASTNode> DescendantsAndSelf(this Chameleon.Parsing.ASTNode item)
{
yield return(item);
foreach (var child in item.Descendants())
{
yield return(child);
}
}
/// <summary>
/// Returns a collection of ancestor elements.
/// </summary>
public static IEnumerable <Chameleon.Parsing.ASTNode> Ancestors(this Chameleon.Parsing.ASTNode item)
{
ILinqTree <Chameleon.Parsing.ASTNode> adapter = new Chameleon.Parsing.ASTNodeTreeAdapter(item);
var parent = adapter.Parent;
while (parent != null)
{
yield return(parent);
adapter = new Chameleon.Parsing.ASTNodeTreeAdapter(parent);
parent = adapter.Parent;
}
}
/// <summary>
/// Returns a collection of the sibling elements before this node, in document order.
/// </summary>
public static IEnumerable <Chameleon.Parsing.ASTNode> ElementsBeforeSelf(this Chameleon.Parsing.ASTNode item)
{
if (item.Ancestors().FirstOrDefault() == null)
{
yield break;
}
foreach (var child in item.Ancestors().First().Elements())
{
if (child.Equals(item))
{
break;
}
yield return(child);
}
}
/// <summary>
/// Returns a collection of the elements after this node, in document order.
/// </summary>
public static IEnumerable <Chameleon.Parsing.ASTNode> ElementsAfterSelf(this Chameleon.Parsing.ASTNode item)
{
if (item.Ancestors().FirstOrDefault() == null)
{
yield break;
}
bool afterSelf = false;
foreach (var child in item.Ancestors().First().Elements())
{
if (afterSelf)
{
yield return(child);
}
if (child.Equals(item))
{
afterSelf = true;
}
}
}
/// <summary>
/// Returns a collection containing this element and all child elements.
/// which match the given type.
/// </summary>
public static IEnumerable <Chameleon.Parsing.ASTNode> ElementsAndSelf <T>(this Chameleon.Parsing.ASTNode item)
{
return(item.ElementsAndSelf().Where(i => i is T).Cast <Chameleon.Parsing.ASTNode>());
}
/// <summary>
/// Returns a collection of ancestor elements which match the given type.
/// </summary>
public static IEnumerable <Chameleon.Parsing.ASTNode> Ancestors <T>(this Chameleon.Parsing.ASTNode item)
{
return(item.Ancestors().Where(i => i is T).Cast <Chameleon.Parsing.ASTNode>());
}
/// <summary>
/// Returns a collection of descendant elements which match the given type.
/// </summary>
public static IEnumerable <Chameleon.Parsing.ASTNode> Descendants <T>(this Chameleon.Parsing.ASTNode item)
{
return(item.Descendants().Where(i => i is T).Cast <Chameleon.Parsing.ASTNode>());
}