public async Task <WorkspaceEdit?> HandleRequestAsync(RenameParams request, RequestContext context, CancellationToken cancellationToken)
{
var document = context.Document;
Contract.ThrowIfNull(document);
var oldSolution = document.Project.Solution;
var renameService = document.Project.LanguageServices.GetRequiredService <IEditorInlineRenameService>();
var position = await document.GetPositionFromLinePositionAsync(ProtocolConversions.PositionToLinePosition(request.Position), cancellationToken).ConfigureAwait(false);
var renameInfo = await renameService.GetRenameInfoAsync(document, position, cancellationToken).ConfigureAwait(false);
if (!renameInfo.CanRename)
{
return(null);
}
var options = new SymbolRenameOptions(
RenameOverloads: false,
RenameInStrings: false,
RenameInComments: false,
RenameFile: false);
var renameLocationSet = await renameInfo.FindRenameLocationsAsync(options, cancellationToken).ConfigureAwait(false);
var renameReplacementInfo = await renameLocationSet.GetReplacementsAsync(request.NewName, options, cancellationToken).ConfigureAwait(false);
var renamedSolution = renameReplacementInfo.NewSolution;
var solutionChanges = renamedSolution.GetChanges(oldSolution);
// Linked files can correspond to multiple roslyn documents each with changes. Merge the changes in the linked files so that all linked documents have the same text.
// Then we can just take the text changes from the first document to avoid returning duplicate edits.
renamedSolution = await renamedSolution.WithMergedLinkedFileChangesAsync(oldSolution, solutionChanges, cancellationToken : cancellationToken).ConfigureAwait(false);
solutionChanges = renamedSolution.GetChanges(oldSolution);
var changedDocuments = solutionChanges
.GetProjectChanges()
.SelectMany(p => p.GetChangedDocuments(onlyGetDocumentsWithTextChanges: true))
.GroupBy(docId => renamedSolution.GetRequiredDocument(docId).FilePath, StringComparer.OrdinalIgnoreCase).Select(group => group.First());
var textDiffService = renamedSolution.Services.GetRequiredService <IDocumentTextDifferencingService>();
var documentEdits = await ProtocolConversions.ChangedDocumentsToTextDocumentEditsAsync(changedDocuments, renamedSolution.GetRequiredDocument, oldSolution.GetRequiredDocument,
textDiffService, cancellationToken).ConfigureAwait(false);
return(new WorkspaceEdit {
DocumentChanges = documentEdits
});
}
