/// <inheritdoc/>
protected override Provider VisitUnion(UnionProvider provider)
{
OnRecursionEntrance(provider);
var left = VisitCompilable(provider.Left);
var right = VisitCompilable(provider.Right);
OnRecursionExit(provider);
if (left == provider.Left && right == provider.Right)
{
return(provider);
}
return(new UnionProvider(left, right));
}
/// <summary> /// Visits the <see cref="UnionProvider"/>. /// </summary> /// <param name="provider">Union provider.</param> /// <returns></returns> protected abstract Provider VisitUnion(UnionProvider provider);