private void OnTextContentChanged(object?sender, TextContentChangedEventArgs args)
{
var changed = this.EtextChanged;
if (changed == null)
{
return;
}
// we should process all changes even though there is no text changes
// otherwise, Workspace.CurrentSolution won't move forward to latest ITextSnapshot
// this should convert given editor snapshots to roslyn forked snapshots
var oldText = (SnapshotSourceText)args.Before.AsText();
var newText = SnapshotSourceText.From(_textBufferCloneService, args.After);
_currentText = newText;
var changes = ImmutableArray.CreateRange(
args.Changes.Select(
c =>
new TextChangeRange(
new TextSpan(c.OldSpan.Start, c.OldSpan.Length),
c.NewLength
)
)
);
var eventArgs = new TextChangeEventArgs(oldText, newText, changes);
this.LastEventArgs = eventArgs;
changed(sender, eventArgs);
}
private TextBufferContainer(ITextBuffer editorBuffer)
{
Contract.ThrowIfNull(editorBuffer);
_weakEditorBuffer = new WeakReference <ITextBuffer>(editorBuffer);
_currentText = SnapshotSourceText.From(editorBuffer.CurrentSnapshot, this);
}
private static SnapshotSourceText CreateText(ITextSnapshot editorSnapshot)
{
var strongBox = s_textBufferLatestSnapshotMap.GetOrCreateValue(editorSnapshot.TextBuffer);
var text = strongBox.Value;
if (text != null && text._reiteratedVersion == editorSnapshot.Version.ReiteratedVersionNumber)
{
if (text.Length == editorSnapshot.Length)
{
return(text);
}
else
{
// In editors with non-compliant Undo/Redo implementations, you can end up
// with two Versions with the same ReiteratedVersionNumber but with very
// different text. We've never provably seen this problem occur in Visual
// Studio, but we have seen crashes that look like they could have been
// caused by incorrect results being returned from this cache.
try
{
throw new InvalidOperationException(
$"The matching cached SnapshotSourceText with <Reiterated Version, Length> = <{text._reiteratedVersion}, {text.Length}> " +
$"does not match the given editorSnapshot with <{editorSnapshot.Version.ReiteratedVersionNumber}, {editorSnapshot.Length}>");
}
catch (Exception e) when(FatalError.ReportWithoutCrash(e))
{
}
}
}
text = new SnapshotSourceText(editorSnapshot);
strongBox.Value = text;
return(text);
}
private TextBufferContainer(ITextBuffer editorBuffer)
{
Contract.ThrowIfNull(editorBuffer);
_weakEditorBuffer = new WeakReference <ITextBuffer>(editorBuffer);
editorBuffer.Properties.TryGetProperty(typeof(ITextBufferCloneService), out _textBufferCloneServiceOpt);
_currentText = SnapshotSourceText.From(_textBufferCloneServiceOpt, editorBuffer.CurrentSnapshot, this);
}
public static SourceText AsText(this ITextSnapshot textSnapshot)
{
textSnapshot.TextBuffer.Properties.TryGetProperty <ITextBufferCloneService>(
typeof(ITextBufferCloneService),
out var textBufferCloneServiceOpt
);
return(SnapshotSourceText.From(textBufferCloneServiceOpt, textSnapshot));
}
private static SnapshotSourceText CreateText(ITextSnapshot editorSnapshot)
{
var strongBox = s_textBufferLatestSnapshotMap.GetOrCreateValue(editorSnapshot.TextBuffer);
var text = strongBox.Value;
if (text != null && text._reiteratedVersion == editorSnapshot.Version.ReiteratedVersionNumber)
{
return(text);
}
text = new SnapshotSourceText(editorSnapshot, editorSnapshot.TextBuffer.GetEncodingOrUTF8());
strongBox.Value = text;
return(text);
}
public ChangedSourceText(
ITextBufferCloneService?textBufferCloneService,
SnapshotSourceText baseText,
ITextImage baseSnapshot,
ITextImage currentSnapshot
)
: base(
textBufferCloneService,
currentSnapshot,
baseText.Encoding,
container: null
)
{
_baseText = baseText;
_baseSnapshot = baseSnapshot;
}
private void OnTextContentChanged(object sender, TextContentChangedEventArgs args)
{
var changed = this.EtextChanged;
if (changed != null && args.Changes.Count != 0)
{
// this should convert given editor snapshots to roslyn forked snapshots
var oldText = (SnapshotSourceText)args.Before.AsText();
var newText = SnapshotSourceText.From(args.After);
_currentText = newText;
var changes = ImmutableArray.CreateRange(args.Changes.Select(c => new TextChangeRange(new TextSpan(c.OldSpan.Start, c.OldSpan.Length), c.NewLength)));
var eventArgs = new TextChangeEventArgs(oldText, newText, changes);
this.LastEventArgs = eventArgs;
changed(sender, eventArgs);
}
}
public static SourceText AsText(this ITextSnapshot textSnapshot) => SnapshotSourceText.From(textBufferCloneServiceOpt: null, textSnapshot);
public ChangedSourceText(SnapshotSourceText baseText, ITextSnapshot baseSnapshot, ITextSnapshot currentSnapshot)
: base(currentSnapshot, containerOpt: null)
{
_baseText = baseText;
_baseSnapshot = baseSnapshot;
}
public LineInfo(SnapshotSourceText text)
{
_text = text;
}
public ChangedSourceText(SnapshotSourceText baseText, ITextImage baseSnapshot, ITextImage currentSnapshot)
: base(currentSnapshot, baseText.Encoding, containerOpt: null)
{
_baseText = baseText;
_baseSnapshot = baseSnapshot;
}
public LineInfo(SnapshotSourceText text)
{
_text = text;
}
public static SourceText AsText(this ITextSnapshot textSnapshot) => SnapshotSourceText.From(textSnapshot);
public static SourceText AsText(this ITextSnapshot textSnapshot)
{
return(SnapshotSourceText.From(textSnapshot));
}
private static SnapshotSourceText CreateText(ITextSnapshot editorSnapshot)
{
var strongBox = s_textBufferLatestSnapshotMap.GetOrCreateValue(editorSnapshot.TextBuffer);
var text = strongBox.Value;
if (text != null && text._reiteratedVersion == editorSnapshot.Version.ReiteratedVersionNumber)
{
return text;
}
text = new SnapshotSourceText(editorSnapshot, editorSnapshot.TextBuffer.GetEncodingOrUTF8());
strongBox.Value = text;
return text;
}
public ChangedSourceText(SnapshotSourceText baseText, ITextSnapshot baseSnapshot, ITextSnapshot currentSnapshot)
: base(currentSnapshot, baseText.Encoding, containerOpt: null)
{
_baseText = baseText;
_baseSnapshot = baseSnapshot;
}
private static SnapshotSourceText CreateText(ITextSnapshot editorSnapshot)
{
var strongBox = s_textBufferLatestSnapshotMap.GetOrCreateValue(editorSnapshot.TextBuffer);
var text = strongBox.Value;
if (text != null && text._reiteratedVersion == editorSnapshot.Version.ReiteratedVersionNumber)
{
if (text.Length == editorSnapshot.Length)
{
return text;
}
else
{
// In editors with non-compliant Undo/Redo implementations, you can end up
// with two Versions with the same ReiteratedVersionNumber but with very
// different text. We've never provably seen this problem occur in Visual
// Studio, but we have seen crashes that look like they could have been
// caused by incorrect results being returned from this cache.
try
{
throw new InvalidOperationException(
$"The matching cached SnapshotSourceText with <Reiterated Version, Length> = <{text._reiteratedVersion}, {text.Length}> " +
$"does not match the given editorSnapshot with <{editorSnapshot.Version.ReiteratedVersionNumber}, {editorSnapshot.Length}>");
}
catch (Exception e) when (FatalError.ReportWithoutCrash(e))
{
}
}
}
text = new SnapshotSourceText(editorSnapshot, editorSnapshot.TextBuffer.GetEncodingOrUTF8());
strongBox.Value = text;
return text;
}
