protected Tuple <Hunk <T>, Hunk <T>, Hunk <T> > BasicShakerFunction(
Hunk <T> target,
ShakeCondition <T> cond,
ShakeSelector <T> selector)
{
#if DEBUG
Console.WriteLine("target = [{0}, {1}], {2}", target.Start, target.Length, target.Value);
#endif
Func <Segment, Hunk <T>, int> getRest = (seg, hunk) => (hunk.Length - (seg.Start + seg.Length));
#if DEBUG
Func <Segment, Hunk <T>, int> getComputedHunkStart = (seg, hunk) => seg.Start + hunk.Start;
#endif
Func <Segment, int> getComputedStart = (seg) => seg.Start + seg.Length;
Segment result = cond(target);
if (result == null)
{
#if DEBUG
Console.WriteLine("Done Null");
#endif
return(new Tuple <Hunk <T>, Hunk <T>, Hunk <T> >(null, null, target));
}
else
{
#if DEBUG
Console.WriteLine("Target = {0}", target);
Console.WriteLine("Target.Length = {0}", target.Length);
Console.WriteLine("Result = {0}", result);
Console.WriteLine("Result Substring = {0}", result.Substring(target.Value.ToString()));
Console.WriteLine("Result = {0}", result);
#endif
Segment restSection = new Segment(getRest(result, target), getComputedStart(result));
#if DEBUG
Console.WriteLine("restSection = {0}", restSection);
Console.WriteLine("restSection = {0}", restSection);
Console.WriteLine("Calling selector");
#endif
var matchHunks = selector(result, target);
#if DEBUG
Console.WriteLine("Finished Calling Selector");
#endif
var before = matchHunks.Item1;
var match = matchHunks.Item2;
match.IsBig = false; //make sure this is preserved
var restHunks = selector(restSection, target);
var rest = restHunks.Item2;
rest.IsBig = true;
return(new Tuple <Hunk <T>, Hunk <T>, Hunk <T> >(before, match, rest));
}
}
public IEnumerable <Hunk <T> > Shake(Hunk <T> target, ShakeCondition <T> cond, ShakeSelector <T> selector)
{
Hunk <T> prev = target;
Tuple <Hunk <T>, Hunk <T>, Hunk <T> > curr = new Tuple <Hunk <T>, Hunk <T>, Hunk <T> >(null, null, target);
do
{
//need a way to just say "if you don't find a single thing
// then just kick back"
curr = BasicShakerFunction(curr.Item3, cond, selector);
if (curr.Item1 != null)
{
yield return(curr.Item1);
}
if (curr.Item2 != null)
{
yield return(curr.Item2);
}
if (curr.Item3.Equals(prev))
{
if (curr.Item3.Length > 0)
{
yield return(curr.Item3);
}
yield break;
}
prev = curr.Item3;
} while (true);
}
public ShakerContainer(ShakeSelector <T> selector)
{
Selector = selector;
}
