internal void RenderFastForward(
bool render,
Block <T> oldTip,
Block <T> newTip,
Block <T> branchpoint,
IReadOnlyList <Block <T> > fastForwardPath,
StateCompleterSet <T> stateCompleters)
{
if (render && ActionRenderers.Any())
{
_logger.Debug("Rendering actions in new chain.");
long count = 0;
foreach (Block <T> block in fastForwardPath)
{
ImmutableList <ActionEvaluation> evaluations =
ActionEvaluator.Evaluate(block, stateCompleters).ToImmutableList();
count += RenderActions(
evaluations: evaluations,
block: block,
stateCompleters: stateCompleters);
}
_logger.Debug(
$"{nameof(Swap)}() completed rendering {{Count}} actions.",
count);
foreach (IActionRenderer <T> renderer in ActionRenderers)
{
renderer.RenderBlockEnd(oldTip, newTip);
}
}
}
internal void RenderRewind(
bool render,
Block <T> oldTip,
Block <T> newTip,
Block <T> branchpoint,
IReadOnlyList <Block <T> > rewindPath,
StateCompleterSet <T> stateCompleters)
{
if (render && ActionRenderers.Any())
{
// Unrender stale actions.
_logger.Debug("Unrendering abandoned actions...");
long count = 0;
foreach (Block <T> block in rewindPath)
{
ImmutableList <ActionEvaluation> evaluations =
ActionEvaluator.Evaluate(block, stateCompleters)
.ToImmutableList().Reverse();
count += UnrenderActions(
evaluations: evaluations,
block: block,
stateCompleters: stateCompleters);
}
_logger.Debug(
$"{nameof(Swap)}() completed unrendering {{Actions}} actions.",
count);
}
}