public static IEnumerable <IAstElement> Descendants(this IAstElement ancestor)
{
Argument.RequireNotNull("ancestor", ancestor);
foreach (var child in ancestor.Children())
{
yield return(child);
foreach (var descendant in child.Descendants())
{
yield return(descendant);
}
}
}
private void CollectTypesFromUsages(IAstElement parent, AstParameterDefinition parameter, ISet <IAstTypeReference> collectedTypes)
{
foreach (var child in parent.Children())
{
var reference = child as AstParameterReference;
if (reference != null && reference.Parameter == parameter)
{
var type = GetTypeFromUsage(parent, reference);
if (type != null)
{
collectedTypes.Add(type);
}
continue;
}
CollectTypesFromUsages(child, parameter, collectedTypes);
}
}
public static TAstElement Child <TAstElement>(this IAstElement parent)
where TAstElement : IAstElement
{
Argument.RequireNotNull("parent", parent);
return(parent.Children <TAstElement>().SingleOrDefault());
}
public static IEnumerable <TAstElement> Children <TAstElement>(this IAstElement parent)
where TAstElement : IAstElement
{
return(parent.Children().OfType <TAstElement>());
}