public PaEntry BinarySearchFirst(Func <PaEntry, int> elementDepth)
{
PaEntry sequ = this;
var typ = sequ.Type;
if (typ.Vid != PTypeEnumeration.sequence)
{
throw new Exception("Function BinarySearchFirst can't be applied to the type with vid=" + typ.Vid);
}
PTypeSequence mts = (PTypeSequence)sequ.Type;
PType tel = mts.ElementType;
if (!tel.HasNoTail)
{
throw new Exception("Function BinarySearchFirst can't be applied to elements with vid=" + tel.Vid);
}
long llen = sequ.Count();
if (llen == 0)
{
sequ.offset = Int64.MinValue; return(sequ);
}
var first_el = sequ.Element(0);
var first_depth = elementDepth(first_el);
if (first_depth == 0)
{
return(first_el);
}
PaEntry found = BinarySearchFirst(first_el, llen, elementDepth);
//if (found.offset == long.MinValue) throw new Exception("Zero element did't foound by FindZero()");
return(found);
}
public IEnumerable <PaEntry> BinarySearchAll(long start, long numb, Func <PaEntry, int> elementDepth)
{
PaEntry sequ = this;
var typ = sequ.Type;
if (typ.Vid != PTypeEnumeration.sequence)
{
throw new Exception("Function BinarySearchAll can't be applied to the type with vid=" + typ.Vid);
}
PTypeSequence mts = (PTypeSequence)sequ.Type;
PType tel = mts.ElementType;
long llen = System.Math.Min(numb, sequ.Count() - start);
if (llen > 0)
{
var elementFrom = sequ.Element(start);
//foreach (var pe in BinarySearchInside(elementFrom, llen, elementDepth)) yield return pe;
return(BinarySearchInside(elementFrom, llen, elementDepth));
}
return(Enumerable.Empty <PaEntry>());
}
public PaEntry BinarySearchFirst(long start, long number, Func <PaEntry, int> elementDepth)
{
PaEntry sequ = this;
if (this.Type.Vid != PTypeEnumeration.sequence)
{
throw new Exception("Function BinarySearchFirst can't be applied to this type");
}
PTypeSequence mts = (PTypeSequence)sequ.Type;
PType tel = mts.ElementType;
if (!tel.HasNoTail)
{
throw new Exception("Function BinarySearchFirst can't be applied to elements with vid=" + tel.Vid);
}
long llen = sequ.Count();
if (llen == 0 || number == 0)
{
return(PaEntry.Empty);
}
if (start < 0 || number < 0 || start + number > llen)
{
throw new IndexOutOfRangeException();
}
var first_el = sequ.Element(start);
var first_depth = elementDepth(first_el);
if (first_depth == 0)
{
return(first_el);
}
PaEntry found = BinarySearchFirst(first_el, number, elementDepth);
return(found);
}