public async Task AnalyzeSyntaxAsync(Document document, CancellationToken cancellationToken)
{
// if closed file diagnostic is off and document is not opened, then don't do anything
if (!_workspace.Options.GetOption(ServiceFeatureOnOffOptions.ClosedFileDiagnostic, document.Project.Language) && !document.IsOpen())
{
return;
}
var tree = await document.GetSyntaxTreeAsync(cancellationToken).ConfigureAwait(false);
var diagnostics = tree.GetDiagnostics(cancellationToken);
Contract.Requires(document.Project.Solution.Workspace == _workspace);
var diagnosticData = diagnostics == null ? ImmutableArray <DiagnosticData> .Empty : diagnostics.Select(d => DiagnosticData.Create(document, d)).ToImmutableArrayOrEmpty();
_service.RaiseDiagnosticsUpdated(new DiagnosticsUpdatedArgs(ValueTuple.Create(this, document.Id), _workspace, document.Project.Solution, document.Project.Id, document.Id, diagnosticData));
}
