public static async Task <SyntaxTreeContextInfo> GetContextInfoAsync(Document document, CancellationToken cancellationToken)
{
SyntaxTreeContextInfo info;
if (contextSnapshotCache.TryGetValue(document, out info))
{
return(info);
}
info = await SyntaxTreeContextInfo.LoadAsync(document, cancellationToken).ConfigureAwait(false);
if (info != null)
{
return(contextSnapshotCache.GetValue(document, _ => info));
}
// alright, we don't have cached information, re-calcuate them here.
var data = await CreateInfoAsync(document, cancellationToken).ConfigureAwait(false);
// okay, persist this info.
await data.Item1.SaveAsync(document, cancellationToken).ConfigureAwait(false);
await data.Item2.SaveAsync(document, cancellationToken).ConfigureAwait(false);
info = data.Item2;
return(contextSnapshotCache.GetValue(document, _ => info));
}
private static async Task PrecalculateBasicInfoAsync(Document document, CancellationToken cancellationToken)
{
// we already have information. move on
if (await SyntaxTreeIdentifierInfo.PrecalculatedAsync(document, cancellationToken).ConfigureAwait(false) &&
await SyntaxTreeContextInfo.PrecalculatedAsync(document, cancellationToken).ConfigureAwait(false))
{
return;
}
var data = await CreateInfoAsync(document, cancellationToken).ConfigureAwait(false);
await data.Item1.SaveAsync(document, cancellationToken).ConfigureAwait(false);
await data.Item2.SaveAsync(document, cancellationToken).ConfigureAwait(false);
}
