bool IStructuralEquatable.Equals(object other, IEqualityComparer comparer)
{
if (object.ReferenceEquals(this, other))
{
return(true);
}
if (other == null)
{
return(false);
}
var list = other as ListTuple;
if (!object.ReferenceEquals(list, null))
{
if (list.m_count != m_count)
{
return(false);
}
if (list.m_offset == 0 && list.m_count == list.m_items.Length)
{
return(CompareItems(list.m_items, comparer));
}
else
{
return(CompareItems(list, comparer));
}
}
return(TupleHelpers.Equals(this, other, comparer));
}
public IVarTuple this[Range range]
{
get
{
int d = this.Depth;
(int offset, int count) = range.GetOffsetAndLength(d + 1);
if (count == 0)
{
return(STuple.Empty);
}
if (count == 1 && offset == d)
{
return(new STuple <T>(this.Tail));
}
if (offset == 0)
{
if (count == d + 1)
{
return(this);
}
if (count == d)
{
return(this.Head);
}
}
return(TupleHelpers.Splice(this, range));
}
}
bool System.Collections.IStructuralEquatable.Equals(object other, System.Collections.IEqualityComparer comparer)
{
if (object.ReferenceEquals(this, other))
{
return(true);
}
if (other == null)
{
return(false);
}
var linked = other as LinkedTuple <T>;
if (!object.ReferenceEquals(linked, null))
{
// must have same length
if (linked.Count != this.Count)
{
return(false);
}
// compare the tail before
if (!comparer.Equals(this.Tail, linked.Tail))
{
return(false);
}
// compare the rest
return(this.Head.Equals(linked.Tail, comparer));
}
return(TupleHelpers.Equals(this, other, comparer));
}
public IVarTuple this[Range range]
{
get
{
int lenHead = this.Head.Count;
int lenTail = this.Tail.Count;
(int offset, int count) = range.GetOffsetAndLength(lenHead + lenTail);
if (count == 0)
{
return(STuple.Empty);
}
if (offset == 0)
{
if (count == lenHead + lenTail)
{
return(this);
}
if (count == lenHead)
{
return(this.Head);
}
}
if (offset == lenHead && count == lenTail)
{
return(this.Tail);
}
return(TupleHelpers.Splice(this, range));
}
}
public IVarTuple this[int?fromIncluded, int?toExcluded]
{
get
{
int begin = fromIncluded.HasValue ? TupleHelpers.MapIndexBounded(fromIncluded.Value, m_count) : 0;
int end = toExcluded.HasValue ? TupleHelpers.MapIndexBounded(toExcluded.Value, m_count) : m_count;
if (end <= begin)
{
return(STuple.Empty);
}
int p = this.Head.Count;
if (begin >= p)
{ // all selected items are in the tail
return(this.Tail[begin - p, end - p]);
}
if (end <= p)
{ // all selected items are in the head
return(this.Head[begin, end]);
}
// selected items are both in head and tail
return(new JoinedTuple(this.Head[begin, null], this.Tail[null, end - p]));
}
}
/// <summary>Test if the start of current tuple is equal to another tuple</summary>
/// <param name="left">Larger tuple</param>
/// <param name="right">Smaller tuple</param>
/// <returns>True if the beginning of <paramref name="left"/> is equal to <paramref name="right"/> or if both tuples are identical</returns>
public static bool StartsWith([NotNull] this ITuple left, [NotNull] ITuple right)
{
Contract.NotNull(left, nameof(left));
Contract.NotNull(right, nameof(right));
//REVIEW: move this on ITuple interface ?
return(TupleHelpers.StartsWith(left, right));
}
/// <summary>Test if the end of current tuple is equal to another tuple</summary>
/// <param name="left">Larger tuple</param>
/// <param name="right">Smaller tuple</param>
/// <returns>True if the end of <paramref name="left"/> is equal to <paramref name="right"/> or if both tuples are identical</returns>
public static bool EndsWith(this IVarTuple left, IVarTuple right)
{
Contract.NotNull(left, nameof(left));
Contract.NotNull(right, nameof(right));
//REVIEW: move this on ITuple interface ?
return(TupleHelpers.EndsWith(left, right));
}
public object?this[int index]
{
get
{
int p = TupleHelpers.MapIndex(index, m_count);
return(p < m_split ? this.Head[p] : this.Tail[p - m_split]);
}
}
/// <summary>Return the typed value of an item of the tuple, given its position</summary>
/// <typeparam name="TItem">Expected type of the item</typeparam>
/// <param name="index">Position of the item (if negative, means relative from the end)</param>
/// <returns>Value of the item at position <paramref name="index"/>, adapted into type <typeparamref name="TItem"/>.</returns>
public TItem Get <TItem>(int index)
{
if (index > 0 || index < -1)
{
return(TupleHelpers.FailIndexOutOfRange <TItem>(index, 1));
}
return(TypeConverters.Convert <T1, TItem>(this.Item1));
}
public object this[int index]
{
get
{
index = TupleHelpers.MapIndex(index, m_count);
return(index < m_split ? this.Head[index] : this.Tail[index - m_split]);
}
}
object IReadOnlyList <object> .this[int index]
{
get
{
if (index > 0 || index < -1)
{
return(TupleHelpers.FailIndexOutOfRange <object>(index, 1));
}
return(this.Item1);
}
}
object?IVarTuple.this[int index]
{
get
{
if (index > 0 || index < -1)
{
return(TupleHelpers.FailIndexOutOfRange <object>(index, 1));
}
return(this.Item1);
}
}
public object?this[Index index]
{
get
{
int p = TupleHelpers.MapIndex(index, this.Depth + 1);
if (p == this.Depth)
{
return(this.Tail);
}
return(this.Head[p]);
}
}
public bool Equals(IVarTuple?other)
{
if (other == null)
{
return(false);
}
if (other is MemoizedTuple mt)
{
return(m_packed.Equals(mt.m_packed));
}
return(TupleHelpers.Equals(this, other, SimilarValueComparer.Default));
}
public bool Equals(IVarTuple other)
{
if (object.ReferenceEquals(other, null))
{
return(false);
}
var memoized = other as MemoizedTuple;
if (!object.ReferenceEquals(memoized, null))
{
return(m_packed.Equals(memoized.m_packed));
}
return(TupleHelpers.Equals(this, other, SimilarValueComparer.Default));
}
bool IStructuralEquatable.Equals(object other, IEqualityComparer comparer)
{
if (other == null)
{
return(false);
}
if (other is STuple <T1> stuple)
{
return(comparer.Equals(this.Item1, stuple.Item1));
}
if (other is ValueTuple <T1> vtuple)
{
return(comparer.Equals(this.Item1, vtuple.Item1));
}
return(TupleHelpers.Equals(this, other, comparer));
}
public static ITupleFormatter <T> CreateAppender([NotNull] ITuple prefix)
{
Contract.NotNull(prefix, nameof(prefix));
return(new AnonymousTupleFormatter <T>(
(value) => prefix.Append <T>(value),
(tuple) =>
{
if (tuple.Count != prefix.Count + 1)
{
throw new ArgumentException("Tuple size is invalid", "tuple");
}
if (!TupleHelpers.StartsWith(tuple, prefix))
{
throw new ArgumentException("Tuple does not start with the expected prefix", "tuple");
}
return tuple.Last <T>();
}
));
}
public IVarTuple this[int?fromIncluded, int?toExcluded]
{
get
{
int begin = fromIncluded.HasValue ? TupleHelpers.MapIndexBounded(fromIncluded.Value, m_count) : 0;
int end = toExcluded.HasValue ? TupleHelpers.MapIndexBounded(toExcluded.Value, m_count) : m_count;
int len = end - begin;
if (len <= 0)
{
return(STuple.Empty);
}
if (begin == 0 && len == m_count)
{
return(this);
}
Contract.Assert(m_offset + begin >= m_offset);
Contract.Assert(len >= 0 && len <= m_count);
return(new ListTuple(m_items, m_offset + begin, len));
}
}
public IVarTuple this[int?fromIncluded, int?toExcluded]
{
get
{
int count = m_items.Length;
int begin = fromIncluded.HasValue ? TupleHelpers.MapIndexBounded(fromIncluded.Value, count) : 0;
int end = toExcluded.HasValue ? TupleHelpers.MapIndexBounded(toExcluded.Value, count) : count;
int len = end - begin;
if (len <= 0)
{
return(STuple.Empty);
}
if (begin == 0 && len == count)
{
return(this);
}
Contract.Debug.Assert(begin >= 0);
Contract.Debug.Assert((uint)len <= count);
return(new ListTuple <T>(m_items.Slice(begin, len)));
}
}
public object this[int index] => m_items[TupleHelpers.MapIndex(index, m_items.Length)];
public T Get <T>(int index)
{
index = TupleHelpers.MapIndex(index, m_count);
return(index < m_split?this.Head.Get <T>(index) : this.Tail.Get <T>(index - m_split));
}
public object this[int index]
{
get { return(m_items[TupleHelpers.MapIndex(index, m_items.Length)]); }
}
public T this[Index index] => m_items.Span[TupleHelpers.MapIndex(index, m_items.Length)];
public ITuple this[int?fromIncluded, int?toExcluded]
{
get { return(TupleHelpers.Splice(this, fromIncluded, toExcluded)); }
}
public object this[int index] => m_items[m_offset + TupleHelpers.MapIndex(index, m_count)];
bool IStructuralEquatable.Equals(object other, System.Collections.IEqualityComparer comparer)
{
return(TupleHelpers.Equals(this, other, comparer));
}
int System.Collections.IStructuralEquatable.GetHashCode(System.Collections.IEqualityComparer comparer)
{
return(TupleHelpers.StructuralGetHashCode(this, comparer));
}
public IVarTuple this[int?fromIncluded, int?toExcluded] => TupleHelpers.Splice(this, fromIncluded, toExcluded);
