static void MergeElement(UxElement dst, UxElement src)
{
// TODO: This does not retain NameToken trivia, maybe directly modify token instead?
if (dst.Name != src.Name)
{
dst.Name = src.Name;
}
MergeAttributes(dst, src);
MergeChildNodes(dst, src);
if (dst.IsEmpty != src.IsEmpty)
{
dst.IsEmpty = src.IsEmpty;
}
}
static void MergeAttributes(UxElement dst, UxElement src)
{
// Since we have better control over ordering of UxAttribute(s) than XAttribute
// we could change this.
// However it's not really that bad to say an attribute is removed and added instead
// of changed after being reordered, since it's not that common.
var matchCount = 0;
foreach (var pair in dst.Attributes.Zip(src.Attributes, (dstAttr, srcAttr) => new { dstAttr, srcAttr }))
{
var dstAttr = pair.dstAttr;
var srcAttr = pair.srcAttr;
if (dstAttr.Name != srcAttr.Name)
{
break;
}
if (!dstAttr.Syntax.Equals(srcAttr.Syntax))
{
dstAttr.ReplaceSyntax(srcAttr.Syntax);
}
matchCount++;
}
// Remove all attributes below the matching ones
foreach (var dstAttr in dst.Attributes.Skip(matchCount).ToArray())
{
dstAttr.Remove();
}
foreach (var srcAttr in src.Attributes.Skip(matchCount))
{
dst.Attributes.Add(new UxAttribute(srcAttr.Syntax));
}
}
// TODO: IMPLEMENT HERE 😀
public AttributeList(UxElement container) : base(
container,
container._syntax.Attributes,
syntax => new UxAttribute(syntax))
{
}