public ImmutableArray <ItemsDiff> GetItemsDiff()
{
var oldItemGroups = from oldItem in _project.Items group oldItem by oldItem.ItemType;
var newItemGroups = from newItem in _sdkBaselineProject.Items group newItem by newItem.ItemType;
var addedRemovedGroups = from og in oldItemGroups
from ng in newItemGroups
where og.Key.Equals(ng.Key, StringComparison.OrdinalIgnoreCase)
select new {
ItemType = og.Key,
DefaultedItems = ng.Intersect(og, ProjectItemComparer.MetadataComparer),
IntroducedItems = ng.Except(og, ProjectItemComparer.IncludeComparer),
NotDefaultedItems = og.Except(ng, ProjectItemComparer.IncludeComparer),
ChangedItems = GetChangedItems(og, ng),
};
var builder = ImmutableArray.CreateBuilder <ItemsDiff>();
foreach (var group in addedRemovedGroups)
{
var defaultedItems = group.DefaultedItems.ToImmutableArray();
var notDefaultedItems = group.NotDefaultedItems.ToImmutableArray();
var introducedItems = group.IntroducedItems.ToImmutableArray();
var changedItems = group.ChangedItems.ToImmutableArray();
var diff = new ItemsDiff(group.ItemType, defaultedItems, notDefaultedItems, introducedItems, changedItems);
builder.Add(diff);
}
return(builder.ToImmutable());
}
private void RemoveOrUpdateItems()
{
foreach (var itemGroup in _projectRootElement.ItemGroups)
{
var configurationName = MSBuildUtilities.GetConfigurationName(itemGroup.Condition);
var itemsDiff = _differs[configurationName].GetItemsDiff();
foreach (var item in itemGroup.Items)
{
ItemsDiff itemTypeDiff = itemsDiff.FirstOrDefault(id => id.ItemType.Equals(item.ItemType, StringComparison.OrdinalIgnoreCase));
if (!itemTypeDiff.DefaultedItems.IsDefault)
{
var defaultedItems = itemTypeDiff.DefaultedItems.Select(i => i.EvaluatedInclude);
if (defaultedItems.Contains(item.Include, StringComparer.OrdinalIgnoreCase))
{
itemGroup.RemoveChild(item);
}
}
if (!itemTypeDiff.ChangedItems.IsDefault)
{
var changedItems = itemTypeDiff.ChangedItems.Select(i => i.EvaluatedInclude);
if (changedItems.Contains(item.Include, StringComparer.OrdinalIgnoreCase))
{
var path = item.Include;
item.Include = null;
item.Update = path;
}
}
}
if (itemGroup.Items.Count == 0)
{
_projectRootElement.RemoveChild(itemGroup);
}
}
}