private static ExpressionGroup OptimizeGroup(Dictionary <Expression, CachedExpression> cache, ExpressionGroup group)
{
// TODO: Generalise this somehow?
switch (group)
{
case Persist p:
return(new Persist(p.State.Select(s => OptimizeSingle(cache, s.InitialValue)),
_ => p.NewValue.Select(n => OptimizeSingle(cache, n))));
case Loop l:
return(new Loop(l.State.Select(s => OptimizeSingle(cache, s.InitialValue)),
_ => OptimizeSingle(cache, l.Condition),
_ => l.Body.Select(n => OptimizeSingle(cache, n))));
default:
return(group);
}
}