public void Fire(RdTextChange change)
{
Assertion.Assert(Delegate.IsBound || BufferVersion == TextBufferVersion.InitVersion,
"Delegate.IsBound || BufferVersion == TextBufferVersion.InitVersion");
if (Delegate.IsBound)
{
Proto.Scheduler.AssertThread();
}
if (IsMaster && myActiveSession != null && myActiveSession.IsCommitting)
{
return;
}
IncrementBufferVersion();
var bufferChange = new RdTextBufferChange(BufferVersion, myLocalOrigin, change);
if (change.Kind == RdTextChangeKind.Reset)
{
ClearState();
}
else if (!IsMaster)
{
myChangesToConfirmOrRollback.Add(bufferChange);
}
myActiveSession?.TryPushLocalChange(change);
Delegate.Changes.SetValue(bufferChange);
}
private void ReceiveChange(RdTextBufferChange rdTextBufferChange)
{
var newVersion = rdTextBufferChange.Version;
var change = rdTextBufferChange.Change;
var side = rdTextBufferChange.Origin;
Assertion.Assert(side != myLocalOrigin, "side != mySide");
var masterVersionRemote = newVersion.Master;
var slaveVersionRemote = newVersion.Slave;
if (change.Kind == RdTextChangeKind.Reset)
{
ClearState();
}
else if (change.Kind == RdTextChangeKind.PromoteVersion)
{
Assertion.Assert(!IsMaster, "!IsMaster");
BufferVersion = newVersion;
return;
}
else
{
if (IsMaster)
{
Assertion.Assert(myChangesToConfirmOrRollback.Count == 0, "changesToConfirmOrRollback.IsEmpty()");
if (masterVersionRemote != BufferVersion.Master)
{
// reject the change. we've already sent overriding change.
return;
}
}
else
{
if (slaveVersionRemote != BufferVersion.Slave)
{
// rollback the changes and notify external subscribers
// don't need to update history here - all reverted changes were already stored before on 'fire' stage
foreach (var ch in Enumerable.Reverse(myChangesToConfirmOrRollback))
{
if (ch.Version.Slave <= slaveVersionRemote)
{
break;
}
myTextChanged.SetValue(ch.Change.Reverse());
}
myChangesToConfirmOrRollback.Clear();
}
else
{
// confirm the changes queue.
myChangesToConfirmOrRollback.Clear();
}
}
}
BufferVersion = newVersion;
myTextChanged.SetValue(change);
}
public bool TryPushRemoteChange(RdTextBufferChange change)
{
if (myState != State.Opened)
{
return(false);
}
if (change.Version.Master <= myVersionBeforeOpening.Master)
{
return(false);
}
myRemoteChanges.Add(change);
return(true);
}
public bool TryPushRemoteChange(RdTextBufferChange change)
{
if (myState != State.Opened)
{
return(false);
}
if (!myBuffer.IsMaster && change.Version.Master <= myVersionBeforeOpening.Master)
{
return(false);
}
if (myBuffer.IsMaster && CompareVersions(change.Version, myVersionBeforeOpening) <= 0)
{
return(false);
}
OnRemoteChange.Fire(change.Change);
myRemoteChanges.Add(change);
return(true);
}
