/// <inheritdoc/>
protected override Provider VisitJoin(JoinProvider provider)
{
OnRecursionEntrance(provider);
var left = VisitCompilable(provider.Left);
var right = VisitCompilable(provider.Right);
var equalIndexes = OnRecursionExit(provider);
if (left == provider.Left && right == provider.Right)
{
return(provider);
}
return(new JoinProvider(left, right, provider.JoinType,
equalIndexes != null ? (Pair <int>[])equalIndexes : provider.EqualIndexes));
}
/// <summary> /// Visits <see cref="JoinProvider"/>. /// </summary> /// <param name="provider">Join provider.</param> protected abstract Provider VisitJoin(JoinProvider provider);
