/// <summary>
/// This method can take some time to finish. It's not threaded
/// </summary>
/// <returns>
/// A <see cref="ParsedDocument"/> that contains the current dom.
/// </returns>
public override async Task <ParsedDocument> UpdateParseDocument()
{
try {
await EnsureAnalysisDocumentIsOpen();
string currentParseFile = GetCurrentParseFileName();
var editor = Editor;
if (editor == null || string.IsNullOrEmpty(currentParseFile))
{
return(null);
}
var currentParseText = editor.CreateDocumentSnapshot();
CancelOldParsing();
var project = Project;
var options = new ParseOptions {
Project = project,
Content = currentParseText,
FileName = currentParseFile,
OldParsedDocument = parsedDocument,
RoslynDocument = AnalysisDocument,
IsAdhocProject = false
};
if (project != null && typeSystemService.CanParseProjections(project, Editor.MimeType, FileName))
{
var projectFile = project.GetProjectFile(currentParseFile);
if (projectFile != null)
{
options.BuildAction = projectFile.BuildAction;
}
var p = await typeSystemService.ParseProjection(options, editor.MimeType);
if (p != null)
{
this.parsedDocument = p.ParsedDocument;
var projections = p.Projections;
foreach (var p2 in projections)
{
p2.CreateProjectedEditor(this);
}
Editor.SetOrUpdateProjections(this, projections, p.DisabledProjectionFeatures);
}
}
else
{
this.parsedDocument = await typeSystemService.ParseFile(options, editor.MimeType) ?? this.parsedDocument;
}
} finally {
OnDocumentParsed(EventArgs.Empty);
}
return(this.parsedDocument);
}
async void StartReparseThreadDelayed(FilePath currentParseFile)
{
var editor = Editor;
if (editor == null || editor.IsDisposed)
{
return;
}
// Don't directly parse the document because doing it at every key press is
// very inefficient. Do it after a small delay instead, so several changes can
// be parsed at the same time.
await EnsureAnalysisDocumentIsOpen();
var currentParseText = editor.CreateSnapshot();
string mimeType = editor.MimeType;
CancelOldParsing();
var token = parseTokenSource.Token;
var currentProject = adhocProject ?? Project;
var projectsContainingFile = currentProject?.ParentSolution?.GetProjectsContainingFile(currentParseFile);
if (projectsContainingFile == null || !projectsContainingFile.Any())
{
projectsContainingFile = new Project [] { currentProject }
}
;
ThreadPool.QueueUserWorkItem(delegate {
foreach (var project in projectsContainingFile)
{
var projectFile = project?.GetProjectFile(currentParseFile);
TypeSystemService.AddSkippedFile(currentParseFile);
var options = new ParseOptions {
Project = project,
Content = currentParseText,
FileName = currentParseFile,
OldParsedDocument = parsedDocument,
RoslynDocument = AnalysisDocument,
IsAdhocProject = IsAdHocProject
};
if (projectFile != null)
{
options.BuildAction = projectFile.BuildAction;
}
if (project != null && TypeSystemService.CanParseProjections(project, mimeType, currentParseFile))
{
TypeSystemService.ParseProjection(options, mimeType, token).ContinueWith((task, state) => {
if (token.IsCancellationRequested)
{
return;
}
if (currentProject != state)
{
return;
}
Application.Invoke((o, args) => {
// this may be called after the document has closed, in that case the OnDocumentParsed event shouldn't be invoked.
var taskResult = task.Result;
if (isClosed || taskResult == null || token.IsCancellationRequested)
{
return;
}
this.parsedDocument = taskResult.ParsedDocument;
var projections = taskResult.Projections;
foreach (var p2 in projections)
{
p2.CreateProjectedEditor(this);
}
Editor.SetOrUpdateProjections(this, projections, taskResult.DisabledProjectionFeatures);
OnDocumentParsed(EventArgs.Empty);
});
}, project, TaskContinuationOptions.OnlyOnRanToCompletion);
}
else if (project == null || currentProject == project)
{
TypeSystemService.ParseFile(options, mimeType, token).ContinueWith(task => {
if (token.IsCancellationRequested)
{
return;
}
Application.Invoke((o, args) => {
// this may be called after the document has closed, in that case the OnDocumentParsed event shouldn't be invoked.
if (isClosed || task.Result == null || token.IsCancellationRequested)
{
return;
}
this.parsedDocument = task.Result;
OnDocumentParsed(EventArgs.Empty);
});
}, TaskContinuationOptions.OnlyOnRanToCompletion);
}
}
});
}