public static SourceText From(
ITextBufferCloneService?textBufferCloneService,
ITextSnapshot editorSnapshot
)
{
if (editorSnapshot == null)
{
throw new ArgumentNullException(nameof(editorSnapshot));
}
if (!s_textSnapshotMap.TryGetValue(editorSnapshot, out var snapshot))
{
// Explicitly obtain the TextBufferContainer before calling GetValue to avoid reentrancy in
// ConditionalWeakTable. https://github.com/dotnet/roslyn/issues/28256
var container = TextBufferContainer.From(editorSnapshot.TextBuffer);
// Avoid capturing `textBufferCloneServiceOpt` on the fast path
var tempTextBufferCloneService = textBufferCloneService;
snapshot = s_textSnapshotMap.GetValue(
editorSnapshot,
s => new SnapshotSourceText(tempTextBufferCloneService, s, container)
);
}
return(snapshot);
}
private SnapshotSourceText(ITextSnapshot editorSnapshot)
{
Contract.ThrowIfNull(editorSnapshot);
this.EditorSnapshot = editorSnapshot;
_containerOpt = TextBufferContainer.From(editorSnapshot.TextBuffer);
_reiteratedVersion = editorSnapshot.Version.ReiteratedVersionNumber;
}
private SnapshotSourceText(ITextSnapshot editorSnapshot, Encoding encodingOpt)
{
Contract.ThrowIfNull(editorSnapshot);
this.RoslynSnapshot = TextBufferMapper.ToRoslyn(editorSnapshot);
_containerOpt = TextBufferContainer.From(editorSnapshot.TextBuffer);
_reiteratedVersion = editorSnapshot.Version.ReiteratedVersionNumber;
_encodingOpt = encodingOpt;
}
private SnapshotSourceText(ITextBufferCloneService textBufferCloneServiceOpt, ITextSnapshot editorSnapshot) :
this(textBufferCloneServiceOpt, editorSnapshot, TextBufferContainer.From(editorSnapshot.TextBuffer))
{
}
public static SourceTextContainer AsTextContainer(this ITextBuffer buffer) => TextBufferContainer.From(buffer);
public static SourceTextContainer AsTextContainer(this ITextBuffer buffer)
{
return(TextBufferContainer.From(buffer));
}
private SnapshotSourceText(ITextSnapshot editorSnapshot) :
this(editorSnapshot, TextBufferContainer.From(editorSnapshot.TextBuffer))
{
}
