public void chain(ChainableComparer <T> lastComparer)
{
if (this._nextComparer == null)
{
this._nextComparer = lastComparer;
return;
}
this._nextComparer.chain(lastComparer);
}
public ChainableComparer <T> Then(ChainableComparer <T> comparer)
{
if (this._nextComparer != null)
{
this._lastComparer.chain(comparer);
}
else
{
this._nextComparer = comparer;
}
this._lastComparer = comparer;
return(this);
}
public int Compare(T x, T y)
{
int?nullable = ChainableComparer <T> .handleNulls(x, y);
if (nullable.HasValue)
{
return(nullable.Value);
}
int num = this.DoCompare(x, y);
if (this.needsToEvaluateNext(num))
{
num = this._nextComparer.Compare(x, y);
}
if (this._direction == Direction.Descending)
{
ChainableComparer <T> .invert(ref num);
}
return(num);
}
public static ChainableComparer <T> Then <T>(this ChainableComparer <T> chainable, Comparison <T> next)
{
return(chainable.Then(new ComparisonComparer <T>(next)));
}
public static ChainableComparer <T> Then <T, U>(this ChainableComparer <T> chainable, Func <T, U> keySelector, Direction sortDirection)
{
return(chainable.Then(new SelectorComparer <T, U>(keySelector, sortDirection)));
}
public static ChainableComparer <T> Then <T>(this ChainableComparer <T> chainable, Comparison <T> next, Direction sortDirection)
{
return(chainable.Then(new ComparisonComparer <T>(next, sortDirection)));
}
