async Task IBackgroundParserSyntaxTreeHandler.OnSyntaxTreeAvailable(SnapshotSyntaxTree snapshotSyntaxTree, CancellationToken cancellationToken)
{
// TODO: Only safe to clear error list if each tagger has its own ErrorListHelper.
_errorListHelper.Clear();
await InvalidateTags(snapshotSyntaxTree, cancellationToken);
}
public async Task Initialize()
{
await Task.Run(async () =>
{
var snapshot = _textBuffer.CurrentSnapshot;
var snapshotSyntaxTree = new SnapshotSyntaxTree(snapshot, snapshot.GetSyntaxTree(CancellationToken.None));
await InvalidateTargets(snapshotSyntaxTree, CancellationToken.None);
});
}
private async Task RaiseSyntaxTreeAvailable(SnapshotSyntaxTree snapshotSyntaxTree, CancellationToken cancellationToken)
{
foreach (var handlerList in _syntaxTreeAvailableEventHandlers)
{
foreach (var handler in handlerList.Value)
{
await handler.OnSyntaxTreeAvailable(snapshotSyntaxTree, cancellationToken);
}
}
}
private async Task InvalidateTargets(SnapshotSyntaxTree snapshotSyntaxTree, CancellationToken cancellationToken)
{
var navigationTargets = new List<EditorTypeNavigationTarget>();
var navigationTargetsVisitor = new NavigationTargetsVisitor(snapshotSyntaxTree.Snapshot, _glyphService, cancellationToken);
await Task.Run(() => navigationTargets.AddRange(navigationTargetsVisitor.GetTargets((CompilationUnitSyntax) snapshotSyntaxTree.SyntaxTree.Root)), cancellationToken);
_navigationTargets = navigationTargets;
OnNavigationTargetsChanged(EventArgs.Empty);
}
protected override Tuple<ITextSnapshot, List<ITagSpan<IErrorTag>>> GetTags(SnapshotSyntaxTree snapshotSyntaxTree, CancellationToken cancellationToken)
{
if (!_errorReportingEnabled)
return Tuple.Create(snapshotSyntaxTree.Snapshot, new List<ITagSpan<IErrorTag>>());
var syntaxTree = snapshotSyntaxTree.SyntaxTree;
var snapshot = snapshotSyntaxTree.Snapshot;
var tagSpans = syntaxTree.GetDiagnostics()
.Select(d => CreateTagSpan(snapshot, d, _squigglesEnabled))
.Where(x => x != null)
.ToList();
return Tuple.Create(snapshot, tagSpans);
}
async Task IBackgroundParserSyntaxTreeHandler.OnSyntaxTreeAvailable(SnapshotSyntaxTree snapshotSyntaxTree, CancellationToken cancellationToken)
{
await InvalidateTargets(snapshotSyntaxTree, cancellationToken);
}
private async Task RaiseSyntaxTreeAvailable(SnapshotSyntaxTree snapshotSyntaxTree, CancellationToken cancellationToken)
{
foreach (var handlerList in _syntaxTreeAvailableEventHandlers)
foreach (var handler in handlerList.Value)
await handler.OnSyntaxTreeAvailable(snapshotSyntaxTree, cancellationToken);
}
public override Task InvalidateTags(SnapshotSyntaxTree snapshotSyntaxTree, CancellationToken cancellationToken)
{
_latestSnapshotSyntaxTree = snapshotSyntaxTree;
return base.InvalidateTags(snapshotSyntaxTree, cancellationToken);
}