public async Task <FoldingRange[]?> HandleRequestAsync(FoldingRangeParams request, RequestContext context, CancellationToken cancellationToken)
{
var document = context.Document;
if (document == null)
{
return(null);
}
var blockStructureService = document.Project.LanguageServices.GetService <BlockStructureService>();
if (blockStructureService == null)
{
return(Array.Empty <FoldingRange>());
}
var options = _globalOptions.GetBlockStructureOptions(document.Project);
var blockStructure = await blockStructureService.GetBlockStructureAsync(document, options, cancellationToken).ConfigureAwait(false);
if (blockStructure == null)
{
return(Array.Empty <FoldingRange>());
}
var text = await document.GetTextAsync(cancellationToken).ConfigureAwait(false);
return(GetFoldingRanges(blockStructure, text));
}