/// <summary>
/// Does the location represent a place where an attribute value can be created or replaced by a completion?
/// </summary>
/// <param name="location">
/// The XML location.
/// </param>
/// <param name="targetAttribute">
/// The attribute (if any) whose value will be replaced by the completion.
/// </param>
/// <param name="onElementWithPath">
/// If specified, attribute's element must have the specified path.
/// </param>
/// <param name="forAttributeNamed">
/// If specified, the attribute must have one of the specified names.
/// </param>
/// <returns>
/// <c>true</c>, if the location represents an attribute whose value can be replaced by a completion; otherwise, <c>false</c>.
/// </returns>
public static bool CanCompleteAttributeValue(this XmlLocation location, out XSAttribute targetAttribute, XSPath onElementWithPath = null, params string[] forAttributeNamed)
{
if (location == null)
{
throw new ArgumentNullException(nameof(location));
}
targetAttribute = null;
XSAttribute attribute;
if (!location.IsAttributeValue(out attribute))
{
return(false);
}
if (onElementWithPath != null && !attribute.HasParentPath(onElementWithPath))
{
return(false);
}
if (forAttributeNamed.Length > 0 && Array.IndexOf(forAttributeNamed, attribute.Name) == -1)
{
return(false);
}
targetAttribute = attribute;
return(true);
}
/// <summary>
/// Does the location represent an attribute's value?
/// </summary>
/// <param name="location">
/// The XML location.
/// </param>
/// <param name="attribute">
/// Receives the attribute whose value is represented by the location.
/// </param>
/// <returns>
/// <c>true</c>, if the location represents an attribute's name; otherwise, <c>false</c>.
/// </returns>
public static bool IsAttributeValue(this XmlLocation location, out XSAttribute attribute)
{
if (location.IsAttributeValue())
{
attribute = (XSAttribute)location.Node;
return(true);
}
attribute = null;
return(false);
}
