/// <summary>
/// Get the current syntax tree for the document if the text is already loaded and the tree is already parsed.
/// In almost all cases, you should call <see cref="GetSyntaxTreeAsync"/> to fetch the tree, which will parse the tree
/// if it's not already parsed.
/// </summary>
public bool TryGetSyntaxTree(out SyntaxTree syntaxTree)
{
// if we already have cache, use it
if (_syntaxTreeResultTask != null)
{
syntaxTree = _syntaxTreeResultTask.Result;
}
if (!_state.TryGetSyntaxTree(out syntaxTree))
{
return(false);
}
// cache the result if it is not already cached
if (_syntaxTreeResultTask == null)
{
var result = Task.FromResult(syntaxTree);
Interlocked.CompareExchange(ref _syntaxTreeResultTask, result, null);
}
return(true);
}
