protected override bool OnTryApply(UxDocument document)
{
if (!NodePath.TryFind(document, out UxElement node))
{
return(false);
}
var attr = node.Attributes.ElementAtOrDefault(AttributeIndex);
if (attr == null || !attr.Syntax.Equals(OldAttribute))
{
return(false);
}
if (attr.Name == NewAttribute.Name.Text)
{
attr.ReplaceSyntax(NewAttribute);
}
else
{
if (!attr.Remove())
{
return(false);
}
node.Attributes.Insert(AttributeIndex, new UxAttribute(NewAttribute));
}
return(true);
}
public bool TryApply(UxDocument document)
{
if (document == null)
{
throw new ArgumentNullException(nameof(document));
}
return(OnTryApply(document));
}
public static void Merge(this UxDocument dst, UxDocument src)
{
if (dst == null)
{
throw new ArgumentNullException(nameof(dst));
}
if (src == null)
{
throw new ArgumentNullException(nameof(src));
}
MergeChildNodes(dst, src);
}
protected override bool OnTryApply(UxDocument document)
{
if (!NodePath.TryFind(document, out UxElement node))
{
return(false);
}
if (!node.Syntax.Name.Equals(OldName))
{
return(false);
}
node.NameToken = NewName;
return(true);
}
protected override bool OnTryApply(UxDocument document)
{
if (!NodePath.TryFind(document, out UxNode node))
{
return(false);
}
if (!node.Syntax.Equals(OldNode))
{
return(false);
}
node.ReplaceWith(UxNode.FromSyntax(NewNode));
return(true);
}
protected override bool OnTryApply(UxDocument document)
{
UxElement node;
if (!NodePath.TryFind(document, out node))
{
return(false);
}
if (node.Attributes.Count > AttributeIndex)
{
return(false);
}
node.Attributes.Insert(AttributeIndex, new UxAttribute(Attribute));
return(true);
}
public bool TryFind <TNode>(UxDocument document, out TNode node)
where TNode : UxNode
{
// Hmm.. that / means root makes it hard to target other nodes
// We could consider / meaning the document instead, and the root
// being defined by /0 (if there's no comment nodes or trivia above or below)
IUxContainer parent;
if (TryFindPathParent(document, out parent))
{
var leafPos = _indexes.Last();
node = parent.Nodes.ElementAtOrDefault(leafPos) as TNode;
return(node != null);
}
node = null;
return(false);
}
protected override bool OnTryApply(UxDocument document)
{
UxElement node;
if (!NodePath.TryFind(document, out node))
{
return(false);
}
var attr = node.Attributes.ElementAtOrDefault(AttributeIndex);
if (attr == null || !attr.Syntax.Equals(Attribute))
{
return(false);
}
return(attr.Remove());
}
protected override bool OnTryApply(UxDocument document)
{
IUxContainer parent;
if (!NodePath.TryFindPathParent(document, out parent))
{
return(false);
}
var index = NodePath.Indexes.LastOrDefault();
if (index > parent.Nodes.Count)
{
return(false);
}
parent.Nodes.Insert(index, UxNode.FromSyntax(Node));
return(true);
}
protected override bool OnTryApply(UxDocument document)
{
UxNode removed;
if (!NodePath.TryFind(document, out removed))
{
return(false);
}
// We might want to loosen up the requirements for this to apply
// To start with however we expect the removed node to be _exactly_
// equal to Node.
if (!removed.Syntax.Equals(Node))
{
return(false);
}
return(removed.Remove());
}
public bool TryFindPathParent(UxDocument doc, out IUxContainer parent)
{
return(TryFindPathParent(doc, out parent, 0));
}
public static bool DeepEquals(this UxDocument a, UxDocument b)
{
return(a.Syntax.Equals(b.Syntax));
}
protected abstract bool OnTryApply(UxDocument document);
