internal async Task <QuickInfoItem?> GetQuickInfoAsync(SemanticModel semanticModel, int position, SymbolDescriptionOptions options, CancellationToken cancellationToken)
{
var extensionManager = _services.WorkspaceServices.GetRequiredService <IExtensionManager>();
// returns the first non-empty quick info found (based on provider order)
foreach (var provider in GetProviders().OfType <CommonQuickInfoProvider>())
{
try
{
if (!extensionManager.IsDisabled(provider))
{
var context = new CommonQuickInfoContext(_services.WorkspaceServices.SolutionServices, semanticModel, position, options, 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);
}
private async Task <QuickInfoItem?> GetQuickInfoAsync(
CommonQuickInfoContext context,
SyntaxToken token)
{
if (token != default &&
token.Span.IntersectsWith(context.Position))
{
return(await BuildQuickInfoAsync(context, token).ConfigureAwait(false));
}
return(null);
}
protected override async Task <QuickInfoItem?> BuildQuickInfoAsync(
CommonQuickInfoContext context, SyntaxToken token)
{
var tokenInformation = BindToken(context.Workspace, context.SemanticModel, token, context.CancellationToken);
if (tokenInformation.Symbols.IsDefaultOrEmpty)
{
return(null);
}
return(await CreateContentAsync(
context.Workspace, context.SemanticModel, token, tokenInformation, supportedPlatforms : null, context.CancellationToken).ConfigureAwait(false));
}
public async Task <QuickInfoItem?> GetQuickInfoAsync(CommonQuickInfoContext context)
{
var tokens = await GetTokensAsync(context.SemanticModel.SyntaxTree, context.Position, context.CancellationToken).ConfigureAwait(false);
foreach (var token in tokens)
{
var info = await GetQuickInfoAsync(context, token).ConfigureAwait(false);
if (info != null)
{
return(info);
}
}
return(null);
}
protected abstract Task <QuickInfoItem?> BuildQuickInfoAsync(CommonQuickInfoContext context, SyntaxToken token);