private static bool IsSort(QueryableMethodKind method)
{
return(method == QueryableMethodKind.OrderBy ||
method == QueryableMethodKind.OrderByDescending ||
method == QueryableMethodKind.ThenBy ||
method == QueryableMethodKind.ThenByDescending);
}
private static Direction GetDirection(QueryableMethodKind method)
{
switch (method)
{
case QueryableMethodKind.OrderBy:
case QueryableMethodKind.ThenBy:
return(Direction.Positive);
case QueryableMethodKind.OrderByDescending:
case QueryableMethodKind.ThenByDescending:
return(Direction.Negative);
default:
throw new ArgumentOutOfRangeException("method");
}
}
/// <summary>
/// Visits method of <see cref="IQueryable"/> or <see cref="IEnumerable{T}"/>.
/// </summary>
/// <param name="mc">The method call expression.</param>
/// <param name="methodKind">Kind of the method.</param>
protected abstract Expression VisitQueryableMethod(MethodCallExpression mc, QueryableMethodKind methodKind);
