private static async Task <(Data existingData, Data newData)> ComputeAndPersistTodoCommentsAsync(
Document document,
TodoCommentState state,
TodoCommentTokens todoCommentTokens,
CancellationToken cancellationToken)
{
// use tree version so that things like compiler option changes are considered
var textVersion = await document.GetTextVersionAsync(cancellationToken).ConfigureAwait(false);
var syntaxVersion = await document.GetSyntaxVersionAsync(cancellationToken).ConfigureAwait(false);
var existingData = await state.TryGetExistingDataAsync(document, cancellationToken).ConfigureAwait(false);
if (existingData != null)
{
// check whether we can use the data as it is (can happen when re-using persisted data from previous VS session)
if (CheckVersions(document, textVersion, syntaxVersion, existingData))
{
return(existingData, existingData);
}
}
var tokens = todoCommentTokens.GetTokens(document);
var comments = await GetTodoCommentsAsync(document, tokens, cancellationToken).ConfigureAwait(false);
var items = await CreateItemsAsync(document, comments, cancellationToken).ConfigureAwait(false);
var data = new Data(textVersion, syntaxVersion, items);
await state.PersistAsync(document, data, cancellationToken).ConfigureAwait(false);
return(existingData, data);
}
public TodoCommentIncrementalAnalyzer(Workspace workspace, TodoCommentIncrementalAnalyzerProvider owner, TodoCommentTokens todoCommentTokens)
{
_workspace = workspace;
_owner = owner;
_todoCommentTokens = todoCommentTokens;
_state = new TodoCommentState();
}
public TodoCommentIncrementalAnalyzer(Workspace workspace, TodoCommentIncrementalAnalyzerProvider owner, TodoCommentTokens todoCommentTokens)
{
_workspace = workspace;
_owner = owner;
_todoCommentTokens = todoCommentTokens;
_state = new TodoCommentState();
}
