public bool ReadIdentifierPositions(Document document, VersionStamp syntaxVersion, string identifier, List<int> positions, CancellationToken cancellationToken)
{
Contract.ThrowIfTrue(string.IsNullOrWhiteSpace(identifier));
if (!PersistenceEnabled)
{
return false;
}
if (!TryGetProjectAndDocumentKey(document, out var key))
{
return false;
}
var persistedVersion = GetIdentifierSetVersion(key);
if (!document.CanReusePersistedSyntaxTreeVersion(syntaxVersion, persistedVersion))
{
return false;
}
if (!TryGetUniqueIdentifierId(identifier, out var identifierId))
{
return false;
}
return EsentExceptionWrapper(key, identifierId, positions, ReadIdentifierPositions, cancellationToken);
}
