public void SymmetricExceptWith(IEnumerable <T> other)
{
if (other == null)
{
throw new ArgumentNullException("other");
}
if (this.m_count == 0)
{
this.UnionWith(other);
}
else if (other == this)
{
this.Clear();
}
else
{
HashSet <T> set = other as HashSet <T>;
if ((set != null) && HashSet <T> .AreEqualityComparersEqual((HashSet <T>) this, set))
{
this.SymmetricExceptWithUniqueHashSet(set);
}
else
{
this.SymmetricExceptWithEnumerable(other);
}
}
}
public bool SetEquals(IEnumerable <T> other)
{
if (other == null)
{
throw new ArgumentNullException("other");
}
HashSet <T> set = other as HashSet <T>;
if ((set != null) && HashSet <T> .AreEqualityComparersEqual((HashSet <T>) this, set))
{
if (this.m_count != set.Count)
{
return(false);
}
return(this.ContainsAllElements(set));
}
ICollection <T> is2 = other as ICollection <T>;
if (((is2 != null) && (this.m_count == 0)) && (is2.Count > 0))
{
return(false);
}
ElementCount count = this.CheckUniqueAndUnfoundElements(other, true);
return((count.uniqueCount == this.m_count) && (count.unfoundCount == 0));
}
public bool IsProperSubsetOf(IEnumerable <T> other)
{
if (other == null)
{
throw new ArgumentNullException("other");
}
ICollection <T> is2 = other as ICollection <T>;
if (is2 != null)
{
if (this.m_count == 0)
{
return(is2.Count > 0);
}
HashSet <T> set = other as HashSet <T>;
if ((set != null) && HashSet <T> .AreEqualityComparersEqual((HashSet <T>) this, set))
{
if (this.m_count >= set.Count)
{
return(false);
}
return(this.IsSubsetOfHashSetWithSameEC(set));
}
}
ElementCount count = this.CheckUniqueAndUnfoundElements(other, false);
return((count.uniqueCount == this.m_count) && (count.unfoundCount > 0));
}
public void IntersectWith(IEnumerable <T> other)
{
if (other == null)
{
throw new ArgumentNullException("other");
}
if (this.m_count != 0)
{
ICollection <T> is2 = other as ICollection <T>;
if (is2 != null)
{
if (is2.Count == 0)
{
this.Clear();
return;
}
HashSet <T> set = other as HashSet <T>;
if ((set != null) && HashSet <T> .AreEqualityComparersEqual((HashSet <T>) this, set))
{
this.IntersectWithHashSetWithSameEC(set);
return;
}
}
this.IntersectWithEnumerable(other);
}
}
internal static bool HashSetEquals(HashSet <T> set1, HashSet <T> set2, IEqualityComparer <T> comparer)
{
if (set1 == null)
{
return(set2 == null);
}
if (set2 == null)
{
return(false);
}
if (HashSet <T> .AreEqualityComparersEqual(set1, set2))
{
if (set1.Count != set2.Count)
{
return(false);
}
foreach (T local in set2)
{
if (!set1.Contains(local))
{
return(false);
}
}
return(true);
}
foreach (T local2 in set2)
{
bool flag = false;
foreach (T local3 in set1)
{
if (comparer.Equals(local2, local3))
{
flag = true;
break;
}
}
if (!flag)
{
return(false);
}
}
return(true);
}
public bool IsSupersetOf(IEnumerable <T> other)
{
if (other == null)
{
throw new ArgumentNullException("other");
}
ICollection <T> is2 = other as ICollection <T>;
if (is2 != null)
{
if (is2.Count == 0)
{
return(true);
}
HashSet <T> set = other as HashSet <T>;
if (((set != null) && HashSet <T> .AreEqualityComparersEqual((HashSet <T>) this, set)) && (set.Count > this.m_count))
{
return(false);
}
}
return(this.ContainsAllElements(other));
}
