protected Workspace(HostServices host)
{
_services = host.CreateWorkspaceServices(this);
// queue used for sending events
var workspaceTaskSchedulerFactory = _services.GetRequiredService <IWorkspaceTaskSchedulerFactory>();
_taskQueue = workspaceTaskSchedulerFactory.CreateEventingTaskQueue();
// initialize with empty document set
_latestDocuments = new WorkspaceDocuments(ImmutableDictionary <DocumentId, Document> .Empty);
}
/// <summary>
/// Apply changes made to a solution back to the workspace.
///
/// The specified solution must be one that originated from this workspace. If it is not, or the workspace
/// has been updated since the solution was obtained from the workspace, then this method returns false. This method
/// will still throw if the solution contains changes that are not supported according to the <see cref="CanApplyChange(ApplyChangesKind)"/>
/// method.
/// </summary>
/// <exception cref="NotSupportedException">Thrown if the solution contains changes not supported according to the
/// <see cref="CanApplyChange(ApplyChangesKind)"/> method.</exception>
public virtual bool TryApplyChanges(WorkspaceDocuments newDocuments)
{
var currentDocuments = CurrentDocuments;
foreach (var newDocument in newDocuments.Documents)
{
var currentDocument = currentDocuments.GetDocument(newDocument.Id);
if (currentDocument != null && currentDocument.SourceText != newDocument.SourceText)
{
ApplyDocumentTextChanged(currentDocument.Id, newDocument.SourceText);
}
}
return(true);
}
/// <summary>
/// Sets the <see cref="CurrentDocuments"/> of this workspace. This method does not raise a <see cref="WorkspaceChanged"/> event.
/// </summary>
protected WorkspaceDocuments SetCurrentDocuments(WorkspaceDocuments documents)
{
var currentDocuments = Volatile.Read(ref _latestDocuments);
if (documents == currentDocuments)
{
// No change
return(documents);
}
while (true)
{
var replacedSolution = Interlocked.CompareExchange(ref _latestDocuments, documents, currentDocuments);
if (replacedSolution == currentDocuments)
{
return(documents);
}
currentDocuments = replacedSolution;
}
}
