private async Task <LinkedFileMergeResult> MergeLinkedDocumentGroupAsync(
IEnumerable <DocumentId> allLinkedDocuments,
IEnumerable <DocumentId> linkedDocumentGroup,
LinkedFileDiffMergingSessionInfo sessionInfo,
IMergeConflictHandler mergeConflictHandler,
CancellationToken cancellationToken)
{
var groupSessionInfo = new LinkedFileGroupSessionInfo();
// Automatically merge non-conflicting diffs while collecting the conflicting diffs
var textDifferencingService = _oldSolution.Workspace.Services.GetService <IDocumentTextDifferencingService>() ?? new DefaultDocumentTextDifferencingService();
var appliedChanges = await textDifferencingService.GetTextChangesAsync(_oldSolution.GetDocument(linkedDocumentGroup.First()), _newSolution.GetDocument(linkedDocumentGroup.First()), cancellationToken).ConfigureAwait(false);
var unmergedChanges = new List <UnmergedDocumentChanges>();
foreach (var documentId in linkedDocumentGroup.Skip(1))
{
appliedChanges = await AddDocumentMergeChangesAsync(
_oldSolution.GetDocument(documentId),
_newSolution.GetDocument(documentId),
appliedChanges.ToList(),
unmergedChanges,
groupSessionInfo,
textDifferencingService,
cancellationToken).ConfigureAwait(false);
}
var originalDocument = _oldSolution.GetDocument(linkedDocumentGroup.First());
var originalSourceText = await originalDocument.GetTextAsync(cancellationToken).ConfigureAwait(false);
// Add comments in source explaining diffs that could not be merged
IEnumerable <TextChange> allChanges;
IList <TextSpan> mergeConflictResolutionSpan = new List <TextSpan>();
if (unmergedChanges.Any())
{
mergeConflictHandler ??= _oldSolution.GetDocument(linkedDocumentGroup.First()).GetLanguageService <ILinkedFileMergeConflictCommentAdditionService>();
var mergeConflictTextEdits = mergeConflictHandler.CreateEdits(originalSourceText, unmergedChanges);
allChanges = MergeChangesWithMergeFailComments(appliedChanges, mergeConflictTextEdits, mergeConflictResolutionSpan, groupSessionInfo);
}
else
{
allChanges = appliedChanges;
}
groupSessionInfo.LinkedDocuments = _newSolution.GetDocumentIdsWithFilePath(originalDocument.FilePath).Length;
groupSessionInfo.DocumentsWithChanges = linkedDocumentGroup.Count();
sessionInfo.LogLinkedFileResult(groupSessionInfo);
return(new LinkedFileMergeResult(allLinkedDocuments, originalSourceText.WithChanges(allChanges), mergeConflictResolutionSpan));
}
private async Task<LinkedFileMergeResult> MergeLinkedDocumentGroupAsync(
IEnumerable<DocumentId> allLinkedDocuments,
IEnumerable<DocumentId> linkedDocumentGroup,
LinkedFileDiffMergingSessionInfo sessionInfo,
IMergeConflictHandler mergeConflictHandler,
CancellationToken cancellationToken)
{
var groupSessionInfo = new LinkedFileGroupSessionInfo();
// Automatically merge non-conflicting diffs while collecting the conflicting diffs
var textDifferencingService = _oldSolution.Workspace.Services.GetService<IDocumentTextDifferencingService>() ?? new DefaultDocumentTextDifferencingService();
var appliedChanges = await textDifferencingService.GetTextChangesAsync(_oldSolution.GetDocument(linkedDocumentGroup.First()), _newSolution.GetDocument(linkedDocumentGroup.First()), cancellationToken).ConfigureAwait(false);
var unmergedChanges = new List<UnmergedDocumentChanges>();
foreach (var documentId in linkedDocumentGroup.Skip(1))
{
appliedChanges = await AddDocumentMergeChangesAsync(
_oldSolution.GetDocument(documentId),
_newSolution.GetDocument(documentId),
appliedChanges.ToList(),
unmergedChanges,
groupSessionInfo,
textDifferencingService,
cancellationToken).ConfigureAwait(false);
}
var originalDocument = _oldSolution.GetDocument(linkedDocumentGroup.First());
var originalSourceText = await originalDocument.GetTextAsync(cancellationToken).ConfigureAwait(false);
// Add comments in source explaining diffs that could not be merged
IEnumerable<TextChange> allChanges;
IList<TextSpan> mergeConflictResolutionSpan = new List<TextSpan>();
if (unmergedChanges.Any())
{
mergeConflictHandler = mergeConflictHandler ?? _oldSolution.GetDocument(linkedDocumentGroup.First()).GetLanguageService<ILinkedFileMergeConflictCommentAdditionService>();
var mergeConflictTextEdits = mergeConflictHandler.CreateEdits(originalSourceText, unmergedChanges);
allChanges = MergeChangesWithMergeFailComments(appliedChanges, mergeConflictTextEdits, mergeConflictResolutionSpan, groupSessionInfo);
}
else
{
allChanges = appliedChanges;
}
groupSessionInfo.LinkedDocuments = _newSolution.GetDocumentIdsWithFilePath(originalDocument.FilePath).Length;
groupSessionInfo.DocumentsWithChanges = linkedDocumentGroup.Count();
sessionInfo.LogLinkedFileResult(groupSessionInfo);
return new LinkedFileMergeResult(allLinkedDocuments, originalSourceText.WithChanges(allChanges), mergeConflictResolutionSpan);
}
