/// <summary>
/// Update the scope of mergeInto to reflect the changes made in the branch we merge from.
/// When files are removed I collect them in the "deleted" dictionary.
/// These are needed later to assign the id to the deleted file.
/// </summary>
private void UpdateScopeTwoParents(Differences deltas, Scope mergeIntoScope, Scope mergeFromScope, Dictionary <string, string> deleted, string commitHash)
{
foreach (var change in deltas.DiffExclusiveToParent1)
{
// These are the changes done on the feature branch. We merge them into the scope.
UpdateScopeFromMergeSource(mergeIntoScope, mergeFromScope, change, deleted, commitHash);
}
foreach (var change in deltas.ChangesInCommit)
{
// These are the changes done on the merge commit itself (fixing conflicts etc)
ApplyChangesToScope(mergeIntoScope, change, deleted);
}
}
/// <summary>
/// Returns the deleted files, no longer in scope (server path -> id)
/// </summary>
private (Scope, Dictionary <string, string>) ApplyChangesToScope(GraphNode node, Differences deltas)
{
var deletedServerPathToId = new Dictionary <string, string>();
Scope scope = null;
if (node.Parents.Count == 0)
{
// Called once for the first commit
scope = new Scope();
UpdateScopeSingleOrNoParent(deltas, scope, deletedServerPathToId);
}
else if (node.Parents.Count == 1)
{
var parent = node.Parents.Single();
scope = parent.Scope;
Debug.Assert(scope != null);
if (parent.Children.Count > 1)
{
// We follow two branches, so each one gets its own copy.
scope = parent.Scope.Clone();
}
else
{
scope = parent.Scope;
}
UpdateScopeSingleOrNoParent(deltas, scope, deletedServerPathToId);
}
else if (IsMerge(node))
{
var mergeInto = node.Parents[0];
var mergeFrom = node.Parents[1];
scope = mergeInto.Scope;
UpdateScopeTwoParents(deltas, mergeInto, mergeFrom, deletedServerPathToId);
}
else
{
Debug.Assert(false);
}
return(scope, deletedServerPathToId);
}