protected override void ApplyDocumentTextChanged(DocumentId document, SourceText newText)
{
if (_openDocumentId != document)
{
return;
}
ITextSnapshot appliedText;
using (var edit = _openTextContainer.GetTextBuffer().CreateEdit(EditOptions.DefaultMinimalChange, reiteratedVersionNumber: null, editTag: null))
{
var oldText = _openTextContainer.CurrentText;
var changes = newText.GetTextChanges(oldText);
foreach (var change in changes)
{
edit.Replace(change.Span.Start, change.Span.Length, change.NewText);
}
appliedText = edit.Apply();
}
this.OnDocumentTextChanged(document, appliedText.AsText(), PreservationMode.PreserveIdentity);
}
public void UpdateText(SourceText newText)
{
_updatding = true;
_editor.Document.BeginUpdate();
var caret = _editor.CaretOffset;
var offset = 0;
try
{
var changes = newText.GetTextChanges(_currentText);
foreach (var change in changes)
{
_editor.Document.Replace(change.Span.Start + offset, change.Span.Length, new StringTextSource(change.NewText));
offset += change.NewText.Length - change.Span.Length;
}
_currentText = newText;
}
finally
{
_updatding = false;
var carretOffset = caret + offset;
if (carretOffset < 0)
{
carretOffset = 0;
}
if (carretOffset > newText.Length)
{
carretOffset = newText.Length;
}
_editor.CaretOffset = carretOffset;
_editor.Document.EndUpdate();
}
}
private void PushTextChanges(Document oldDocument, Document newDocument)
{
// this pushes text changes to the remote side if it can.
// this is purely perf optimization. whether this pushing text change
// worked or not doesn't affect feature's functionality.
//
// this basically see whether it can cheaply find out text changes
// between 2 snapshots, if it can, it will send out that text changes to
// remote side.
//
// the remote side, once got the text change, will again see whether
// it can use that text change information without any high cost and
// create new snapshot from it.
//
// otherwise, it will do the normal behavior of getting full text from
// VS side. this optimization saves times we need to do full text
// synchronization for typing scenario.
SourceText oldText = null;
SourceText newText = null;
if ((oldDocument.TryGetText(out oldText) == false) ||
(newDocument.TryGetText(out newText) == false))
{
// we only support case where text already exist
return;
}
// get text changes
var textChanges = newText.GetTextChanges(oldText);
if (textChanges.Count == 0)
{
// no changes
return;
}
// whole document case
if (textChanges.Count == 1 && textChanges[0].Span.Length == oldText.Length)
{
// no benefit here. pulling from remote host is more efficient
return;
}
// only cancelled when remote host gets shutdown
var token = Listener.BeginAsyncOperation(nameof(PushTextChanges));
_textChangeQueue.ScheduleTask(async() =>
{
var client = await _service.Workspace.TryGetRemoteHostClientAsync(CancellationToken).ConfigureAwait(false);
if (client == null)
{
return;
}
var state = await oldDocument.State.GetStateChecksumsAsync(CancellationToken).ConfigureAwait(false);
await client.TryRunRemoteAsync(
WellKnownRemoteHostServices.RemoteHostService, nameof(IRemoteHostService.SynchronizeTextAsync),
new object[] { oldDocument.Id, state.Text, textChanges }, CancellationToken).ConfigureAwait(false);
}, CancellationToken).CompletesAsyncOperation(token);
}
protected override void ApplyDocumentTextChanged(DocumentId id, SourceText text)
{
var document = GetDocument(id);
if (document == null)
{
return;
}
bool isOpen;
var filePath = document.FilePath;
Projection projection = null;
foreach (var entry in ProjectionList)
{
var p = entry.Projections.FirstOrDefault(proj => FilePath.PathComparer.Equals(proj.Document.FileName, filePath));
if (p != null)
{
filePath = entry.File.FilePath;
projection = p;
break;
}
}
var data = TextFileProvider.Instance.GetTextEditorData(filePath, out isOpen);
var oldFile = isOpen ? document.GetTextAsync().Result : new MonoDevelopSourceText(data);
var changes = text.GetTextChanges(oldFile).OrderByDescending(c => c.Span.Start).ToList();
int delta = 0;
if (!isOpen)
{
delta = ApplyChanges(projection, data, changes);
var formatter = CodeFormatterService.GetFormatter(data.MimeType);
var mp = GetMonoProject(CurrentSolution.GetProject(id.ProjectId));
string currentText = data.Text;
foreach (var change in changes)
{
delta -= change.Span.Length - change.NewText.Length;
var startOffset = change.Span.Start - delta;
if (projection != null)
{
int originalOffset;
if (projection.TryConvertFromProjectionToOriginal(startOffset, out originalOffset))
{
startOffset = originalOffset;
}
}
string str;
if (change.NewText.Length == 0)
{
str = formatter.FormatText(mp.Policies, currentText, TextSegment.FromBounds(Math.Max(0, startOffset - 1), Math.Min(data.Length, startOffset + 1)));
}
else
{
str = formatter.FormatText(mp.Policies, currentText, new TextSegment(startOffset, change.NewText.Length));
}
data.ReplaceText(startOffset, change.NewText.Length, str);
}
data.Save();
OnDocumentTextChanged(id, new MonoDevelopSourceText(data), PreservationMode.PreserveValue);
FileService.NotifyFileChanged(filePath);
}
else
{
var formatter = CodeFormatterService.GetFormatter(data.MimeType);
var documentContext = IdeApp.Workbench.Documents.FirstOrDefault(d => FilePath.PathComparer.Compare(d.FileName, filePath) == 0);
if (documentContext != null)
{
var editor = (TextEditor)data;
using (var undo = editor.OpenUndoGroup()) {
delta = ApplyChanges(projection, data, changes);
foreach (var change in changes)
{
delta -= change.Span.Length - change.NewText.Length;
var startOffset = change.Span.Start - delta;
if (projection != null)
{
int originalOffset;
if (projection.TryConvertFromProjectionToOriginal(startOffset, out originalOffset))
{
startOffset = originalOffset;
}
}
if (change.NewText.Length == 0)
{
formatter.OnTheFlyFormat(editor, documentContext, TextSegment.FromBounds(Math.Max(0, startOffset - 1), Math.Min(data.Length, startOffset + 1)));
}
else
{
formatter.OnTheFlyFormat(editor, documentContext, new TextSegment(startOffset, change.NewText.Length));
}
}
}
}
OnDocumentTextChanged(id, new MonoDevelopSourceText(data.CreateDocumentSnapshot()), PreservationMode.PreserveValue);
Runtime.RunInMainThread(() => {
if (IdeApp.Workbench != null)
{
foreach (var w in IdeApp.Workbench.Documents)
{
w.StartReparseThread();
}
}
});
}
}
public override IReadOnlyList <TextChange> GetTextChanges(SourceText oldText) => _sourceText.GetTextChanges(oldText);
protected override void ApplyDocumentTextChanged(DocumentId id, SourceText text)
{
var document = GetDocument(id);
if (document == null)
{
return;
}
bool isOpen;
var filePath = document.FilePath;
var data = TextFileProvider.Instance.GetTextEditorData(filePath, out isOpen);
// Guard against already done changes in linked files.
// This shouldn't happen but the roslyn merging seems not to be working correctly in all cases :/
if (document.GetLinkedDocumentIds().Length > 0 && isOpen && !(text.GetType().FullName == "Microsoft.CodeAnalysis.Text.ChangedText"))
{
return;
}
SourceText formerText;
if (changedFiles.TryGetValue(filePath, out formerText))
{
if (formerText.Length == text.Length && formerText.ToString() == text.ToString())
{
return;
}
}
changedFiles [filePath] = text;
Projection projection = null;
foreach (var entry in ProjectionList)
{
var p = entry.Projections.FirstOrDefault(proj => FilePath.PathComparer.Equals(proj.Document.FileName, filePath));
if (p != null)
{
filePath = entry.File.FilePath;
projection = p;
break;
}
}
SourceText oldFile;
if (!isOpen || !document.TryGetText(out oldFile))
{
oldFile = new MonoDevelopSourceText(data);
}
var changes = text.GetTextChanges(oldFile).OrderByDescending(c => c.Span.Start).ToList();
int delta = 0;
if (!isOpen)
{
delta = ApplyChanges(projection, data, changes);
var formatter = CodeFormatterService.GetFormatter(data.MimeType);
var mp = GetMonoProject(CurrentSolution.GetProject(id.ProjectId));
string currentText = data.Text;
foreach (var change in changes)
{
delta -= change.Span.Length - change.NewText.Length;
var startOffset = change.Span.Start - delta;
if (projection != null)
{
int originalOffset;
if (projection.TryConvertFromProjectionToOriginal(startOffset, out originalOffset))
{
startOffset = originalOffset;
}
}
string str;
if (change.NewText.Length == 0)
{
str = formatter.FormatText(mp.Policies, currentText, TextSegment.FromBounds(Math.Max(0, startOffset - 1), Math.Min(data.Length, startOffset + 1)));
}
else
{
str = formatter.FormatText(mp.Policies, currentText, new TextSegment(startOffset, change.NewText.Length));
}
data.ReplaceText(startOffset, change.NewText.Length, str);
}
data.Save();
OnDocumentTextChanged(id, new MonoDevelopSourceText(data), PreservationMode.PreserveValue);
FileService.NotifyFileChanged(filePath);
}
else
{
var formatter = CodeFormatterService.GetFormatter(data.MimeType);
var documentContext = IdeApp.Workbench.Documents.FirstOrDefault(d => FilePath.PathComparer.Compare(d.FileName, filePath) == 0);
if (documentContext != null)
{
var editor = (TextEditor)data;
using (var undo = editor.OpenUndoGroup()) {
delta = ApplyChanges(projection, data, changes);
foreach (var change in changes)
{
delta -= change.Span.Length - change.NewText.Length;
var startOffset = change.Span.Start - delta;
if (projection != null)
{
int originalOffset;
if (projection.TryConvertFromProjectionToOriginal(startOffset, out originalOffset))
{
startOffset = originalOffset;
}
}
if (change.NewText.Length == 0)
{
formatter.OnTheFlyFormat(editor, documentContext, TextSegment.FromBounds(Math.Max(0, startOffset - 1), Math.Min(data.Length, startOffset + 1)));
}
else
{
formatter.OnTheFlyFormat(editor, documentContext, new TextSegment(startOffset, change.NewText.Length));
}
}
}
}
OnDocumentTextChanged(id, new MonoDevelopSourceText(data.CreateDocumentSnapshot()), PreservationMode.PreserveValue);
Runtime.RunInMainThread(() => {
if (IdeApp.Workbench != null)
{
foreach (var w in IdeApp.Workbench.Documents)
{
w.StartReparseThread();
}
}
});
}
}
internal List <UnchangedSegment> GetReuseMapTo(SourceText newVersion)
{
SourceText oldVersion = this.Version;
if (oldVersion == null || newVersion == null)
{
return(null);
}
// if (!oldVersion.BelongsToSameDocumentAs(newVersion))
// return null;
List <UnchangedSegment> reuseMap = new List <UnchangedSegment>();
reuseMap.Add(new UnchangedSegment(0, 0, this.TextLength));
foreach (var change in oldVersion.GetTextChanges(newVersion))
{
bool needsSegmentRemoval = false;
var insertionLength = change.NewText != null ? change.NewText.Length : 0;
for (int i = 0; i < reuseMap.Count; i++)
{
UnchangedSegment segment = reuseMap[i];
if (segment.NewOffset + segment.Length <= change.Span.Start)
{
// change is completely after this segment
continue;
}
if (change.Span.End <= segment.NewOffset)
{
// change is completely before this segment
segment.NewOffset += insertionLength - change.Span.Length;
reuseMap[i] = segment;
continue;
}
// Change is overlapping segment.
// Split segment into two parts: the part before change, and the part after change.
var segmentBefore = new UnchangedSegment(segment.OldOffset, segment.NewOffset, change.Span.Start - segment.NewOffset);
Debug.Assert(segmentBefore.Length < segment.Length);
int lengthAtEnd = segment.NewOffset + segment.Length - (change.Span.End);
var segmentAfter = new UnchangedSegment(
segment.OldOffset + segment.Length - lengthAtEnd,
change.Span.Start + insertionLength,
lengthAtEnd);
Debug.Assert(segmentAfter.Length < segment.Length);
Debug.Assert(segmentBefore.Length + segmentAfter.Length <= segment.Length);
Debug.Assert(segmentBefore.NewOffset + segmentBefore.Length <= segmentAfter.NewOffset);
Debug.Assert(segmentBefore.OldOffset + segmentBefore.Length <= segmentAfter.OldOffset);
if (segmentBefore.Length > 0 && segmentAfter.Length > 0)
{
reuseMap[i] = segmentBefore;
reuseMap.Insert(++i, segmentAfter);
}
else if (segmentBefore.Length > 0)
{
reuseMap[i] = segmentBefore;
}
else
{
reuseMap[i] = segmentAfter;
if (segmentAfter.Length <= 0)
{
needsSegmentRemoval = true;
}
}
}
if (needsSegmentRemoval)
{
reuseMap.RemoveAll(s => s.Length <= 0);
}
}
return(reuseMap);
}
