/// <summary>
/// Does the location represent an element or an attribute?
/// </summary>
/// <param name="location">
/// The XML location.
/// </param>
/// <returns>
/// <c>true</c>, if the location represents an element or attribute; otherwise, <c>false</c>.
/// </returns>
public static bool IsElementOrAttribute(this XmlLocation location)
{
if (location == null)
{
throw new ArgumentNullException(nameof(location));
}
return(location.IsElement() || location.IsAttribute());
}
/// <summary>
/// Does the location represent an attribute?
/// </summary>
/// <param name="location">
/// The XML location.
/// </param>
/// <param name="attribute">
/// Receives the <see cref="XSAttribute"/>.
/// </param>
/// <returns>
/// <c>true</c>, if the location represents an attribute; otherwise, <c>false</c>.
/// </returns>
public static bool IsAttribute(this XmlLocation location, out XSAttribute attribute)
{
if (location == null)
{
throw new ArgumentNullException(nameof(location));
}
if (!location.IsAttribute())
{
attribute = null;
return(false);
}
attribute = (XSAttribute)location.Node;
return(true);
}
/// <summary>
/// Does the location represent a place where an attribute can be created or replaced by a completion?
/// </summary>
/// <param name="location">
/// The XML location.
/// </param>
/// <param name="element">
/// The element whose attribute will be completed.
/// </param>
/// <param name="replaceAttribute">
/// The attribute (if any) that will be replaced by the completion.
/// </param>
/// <param name="needsPadding">
/// An <see cref="PaddingType"/> value indicating what sort of padding (if any) is required before / after the attribute.
/// </param>
/// <param name="onElementWithPath">
/// If specified, the location's element must have the specified path.
/// </param>
/// <returns>
/// <c>true</c>, if the location represents an element that can be replaced by completion; otherwise, <c>false</c>.
/// </returns>
public static bool CanCompleteAttribute(this XmlLocation location, out XSElement element, out XSAttribute replaceAttribute, out PaddingType needsPadding, XSPath onElementWithPath = null)
{
if (location == null)
{
throw new ArgumentNullException(nameof(location));
}
replaceAttribute = null;
needsPadding = PaddingType.None;
XSAttribute attribute;
if (location.IsAttribute(out attribute) && !location.IsValue())
{
element = attribute.Element;
if (location.Position == attribute.Start)
{
// Since we're on an existing attribute, we'll add a new attribute after it.
attribute = null;
needsPadding = PaddingType.Trailing;
}
}
else if (location.IsElementBetweenAttributes(out element))
{
if (element.Attributes.Count > 0)
{
// Check if we're directly before an attribute.
foreach (XSAttribute currentAttribute in element.Attributes)
{
if (location.Position == currentAttribute.End)
{
needsPadding = PaddingType.Leading;
}
else
{
continue;
}
break;
}
}
else if (location.Position == element.NameRange.End) // We're directly after the name.
{
needsPadding = PaddingType.Leading;
}
}
else if (location.IsElement(out element))
{
// Check if we're directly after the name.
if (location.Position != element.NameRange.End)
{
return(false);
}
needsPadding = PaddingType.Leading;
}
else
{
return(false);
}
if (onElementWithPath != null && !element.Path.Matches(onElementWithPath))
{
return(false);
}
replaceAttribute = attribute;
return(true);
}
