public override async Task <QuickInfoItem> GetQuickInfoAsync(Document document, int position, CancellationToken cancellationToken)
{
var extensionManager = _workspace.Services.GetService <IExtensionManager>();
// returns the first non-empty quick info found (based on provider order)
foreach (var provider in GetProviders())
{
try
{
if (!extensionManager.IsDisabled(provider))
{
var context = new QuickInfoContext(document, position, cancellationToken);
var info = await provider.GetQuickInfoAsync(context).ConfigureAwait(false);
if (info != null)
{
return(info);
}
}
}
catch (OperationCanceledException)
{
throw;
}
catch (Exception e) when(extensionManager.CanHandleException(provider, e))
{
extensionManager.HandleException(provider, e);
}
}
return(null);
}
public override async Task <QuickInfoItem> GetQuickInfoAsync(QuickInfoContext context)
{
var document = context.Document;
var position = context.Position;
var cancellationToken = context.CancellationToken;
var tree = await document.GetSyntaxTreeAsync(cancellationToken).ConfigureAwait(false);
var token = await tree.GetTouchingTokenAsync(position, cancellationToken, findInsideTrivia : true).ConfigureAwait(false);
var info = await GetQuickInfoAsync(document, token, position, cancellationToken).ConfigureAwait(false);
if (info == null && ShouldCheckPreviousToken(token))
{
var previousToken = token.GetPreviousToken();
info = await GetQuickInfoAsync(document, previousToken, position, cancellationToken).ConfigureAwait(false);
}
return(info);
}
/// <summary> /// Gets the <see cref="QuickInfoItem"/> for the position. /// </summary> /// <returns>The <see cref="QuickInfoItem"/> or null if no item is available.</returns> public abstract Task <QuickInfoItem> GetQuickInfoAsync(QuickInfoContext context);