private static Node NodeTreeFromList(IOrderedCollection <KeyValuePair <TKey, TValue> > items, int start, int length)
{
Requires.NotNull(items, nameof(items));
Requires.Range(start >= 0, nameof(start));
Requires.Range(length >= 0, nameof(length));
if (length == 0)
{
return(EmptyNode);
}
int rightCount = (length - 1) / 2;
int leftCount = (length - 1) - rightCount;
Node left = NodeTreeFromList(items, start, leftCount);
Node right = NodeTreeFromList(items, start + leftCount + 1, rightCount);
var item = items[start + leftCount];
return(new Node(item.Key, item.Value, left, right, true));
}
private static SortedInt32KeyNode <TValue> NodeTreeFromList(IOrderedCollection <KeyValuePair <int, TValue> > items, int start, int length)
{
Requires.NotNull(items, "items");
Requires.Range(start >= 0, "start");
Requires.Range(length >= 0, "length");
if (length == 0)
{
return(EmptyNode);
}
int rightCount = (length - 1) / 2;
int leftCount = (length - 1) - rightCount;
SortedInt32KeyNode <TValue> left = NodeTreeFromList(items, start, leftCount);
SortedInt32KeyNode <TValue> right = NodeTreeFromList(items, start + leftCount + 1, rightCount);
var item = items[start + leftCount];
return(new SortedInt32KeyNode <TValue>(item.Key, item.Value, left, right, true));
}
/// <summary>
/// Inserts the specified values at the specified index.
/// </summary>
/// <param name="index">The index at which to insert the value.</param>
/// <param name="items">The elements to insert.</param>
public void InsertRange(int index, ImmutableArray <T> items)
{
Requires.Range(index >= 0 && index <= this.Count, nameof(index));
if (items.IsEmpty)
{
return;
}
this.EnsureCapacity(this.Count + items.Length);
if (index != this.Count)
{
Array.Copy(_elements, index, _elements, index + items.Length, _count - index);
}
Array.Copy(items.array !, 0, _elements, index, items.Length);
_count += items.Length;
}
/// <summary>
/// Gets the element of the set at the given index.
/// </summary>
/// <param name="index">The 0-based index of the element in the set to return.</param>
/// <returns>The element at the given position.</returns>
internal T this[int index]
{
get
{
Requires.Range(index >= 0 && index < this.Count, nameof(index));
Debug.Assert(_left != null && _right != null);
if (index < _left._count)
{
return(_left[index]);
}
if (index > _left._count)
{
return(_right[index - _left._count - 1]);
}
return(_key);
}
}
public static ImmutableArray <T> Create <T>(ImmutableArray <T> items, int start, int length)
{
Requires.Range(start >= 0 && start <= items.Length, nameof(start));
Requires.Range(length >= 0 && start + length <= items.Length, nameof(length));
if (length == 0)
{
return(Create <T>());
}
if (start == 0 && length == items.Length)
{
return(items);
}
var array = new T[length];
Array.Copy(items.array, start, array, 0, length);
return(new ImmutableArray <T>(array));
}
public static ImmutableArray<T> Create<T>(T[] items, int start, int length)
{
Requires.NotNull(items, "items");
Requires.Range(start >= 0 && start <= items.Length, "start");
Requires.Range(length >= 0 && start + length <= items.Length, "length");
if (length == 0)
{
// Avoid allocating an array.
return Create<T>();
}
var array = new T[length];
for (int i = 0; i < length; i++)
{
array[i] = items[start + i];
}
return new ImmutableArray<T>(array);
}
public static ImmutableArray<TResult> CreateRange<TSource, TArg, TResult>(ImmutableArray<TSource> items, int start, int length, Func<TSource, TArg, TResult> selector, TArg arg)
{
int itemsLength = items.Length;
Requires.Range(start >= 0 && start <= itemsLength, "start");
Requires.Range(length >= 0 && start + length <= itemsLength, "length");
Requires.NotNull(selector, "selector");
if (length == 0)
{
return Create<TResult>();
}
var array = new TResult[length];
for (int i = 0; i < length; i++)
{
array[i] = selector(items[i + start], arg);
}
return new ImmutableArray<TResult>(array);
}
public static ImmutableArray <TResult> CreateRange <TSource, TResult>(ImmutableArray <TSource> items, int start, int length, Func <TSource, TResult> selector)
{
int itemsLength = items.Length;
Requires.Range(start >= 0 && start <= itemsLength, nameof(start));
Requires.Range(length >= 0 && start + length <= itemsLength, nameof(length));
Requires.NotNull(selector, nameof(selector));
if (length == 0)
{
return(Create <TResult>());
}
var array = new TResult[length];
for (int i = 0; i < length; i++)
{
array[i] = selector(items[i + start]);
}
return(new ImmutableArray <TResult>(array));
}
/// <summary>
/// Removes the specified values from this list.
/// </summary>
/// <param name="index">The 0-based index into the array for the element to omit from the returned array.</param>
/// <param name="length">The number of elements to remove.</param>
public void RemoveRange(int index, int length)
{
Requires.Range(index >= 0 && index + length <= _count, nameof(index));
if (length == 0)
{
return;
}
if (index + length < this._count)
{
#if NET6_0_OR_GREATER
if (RuntimeHelpers.IsReferenceOrContainsReferences <T>())
{
Array.Clear(_elements, index, length); // Clear the elements so that the gc can reclaim the references.
}
#endif
Array.Copy(_elements, index + length, _elements, index, this.Count - index - length);
}
this._count -= length;
}
public ImmutableArray <T> Sort(int index, int count, IComparer <T> comparer)
{
var self = this;
self.ThrowNullRefIfNotInitialized();
Requires.Range(index >= 0, nameof(index));
Requires.Range(count >= 0 && index + count <= self.Length, nameof(count));
// 0 and 1 element arrays don't need to be sorted.
if (count > 1)
{
if (comparer == null)
{
comparer = Comparer <T> .Default;
}
// Avoid copying the entire array when the array is already sorted.
bool outOfOrder = false;
for (int i = index + 1; i < index + count; i++)
{
if (comparer.Compare(self.array[i - 1], self.array[i]) > 0)
{
outOfOrder = true;
break;
}
}
if (outOfOrder)
{
var tmp = new T[self.Length];
Array.Copy(self.array, 0, tmp, 0, self.Length);
Array.Sort(tmp, index, count, comparer);
return(new ImmutableArray <T>(tmp));
}
}
return(self);
}
/// <summary>
/// Inserts the specified values at the specified index.
/// </summary>
/// <param name="index">The index at which to insert the value.</param>
/// <param name="items">The elements to insert.</param>
public void InsertRange(int index, IEnumerable <T> items)
{
Requires.Range(index >= 0 && index <= this.Count, nameof(index));
Requires.NotNull(items, nameof(items));
int count = ImmutableExtensions.GetCount(ref items);
this.EnsureCapacity(this.Count + count);
if (index != this.Count)
{
Array.Copy(_elements, index, _elements, index + count, _count - index);
}
if (!items.TryCopyTo(_elements, index))
{
foreach (var item in items)
{
_elements[index++] = item;
}
}
_count += count;
}
/// <summary>
/// Searches the array for the specified item.
/// </summary>
/// <param name="item">The item to search for.</param>
/// <param name="startIndex">The index at which to begin the search.</param>
/// <param name="count">The number of elements to search.</param>
/// <param name="equalityComparer">
/// The equality comparer to use in the search.
/// If <c>null</c>, <see cref="EqualityComparer{T}.Default"/> is used.
/// </param>
/// <returns>The 0-based index into the array where the item was found; or -1 if it could not be found.</returns>
public int IndexOf(T item, int startIndex, int count, IEqualityComparer <T>?equalityComparer)
{
var self = this;
self.ThrowNullRefIfNotInitialized();
if (count == 0 && startIndex == 0)
{
return(-1);
}
Requires.Range(startIndex >= 0 && startIndex < self.Length, nameof(startIndex));
Requires.Range(count >= 0 && startIndex + count <= self.Length, nameof(count));
equalityComparer = equalityComparer ?? EqualityComparer <T> .Default;
if (equalityComparer == EqualityComparer <T> .Default)
{
return(Array.IndexOf(self.array !, item, startIndex, count));
}
else
{
for (int i = startIndex; i < startIndex + count; i++)
{
if (equalityComparer.Equals(self.array ![i], item))
/// <summary>
/// Copies the current contents to the specified array.
/// </summary>
/// <param name="array">The array to copy to.</param>
/// <param name="index">The starting index of the target array.</param>
public void CopyTo(T[] array, int index)
{
Requires.NotNull(array, nameof(array));
Requires.Range(index >= 0 && index + this.Count <= array.Length, nameof(index));
Array.Copy(_elements, 0, array, index, this.Count);
}
/// <summary>
/// Initializes a new instance of the <see cref="Builder"/> class.
/// </summary>
/// <param name="capacity">The initial capacity of the internal array.</param>
internal Builder(int capacity)
{
Requires.Range(capacity >= 0, nameof(capacity));
_elements = new T[capacity];
_count = 0;
}
/// <summary>
/// Initializes an <see cref="Enumerator"/> structure.
/// </summary>
/// <param name="root">The root of the set to be enumerated.</param>
/// <param name="builder">The builder, if applicable.</param>
/// <param name="startIndex">The index of the first element to enumerate.</param>
/// <param name="count">The number of elements in this collection.</param>
/// <param name="reversed"><c>true</c> if the list should be enumerated in reverse order.</param>
internal Enumerator(Node root, Builder builder = null, int startIndex = -1, int count = -1, bool reversed = false)
{
Requires.NotNull(root, nameof(root));
Requires.Range(startIndex >= -1, nameof(startIndex));
Requires.Range(count >= -1, nameof(count));
Requires.Argument(reversed || count == -1 || (startIndex == -1 ? 0 : startIndex) + count <= root.Count);
Requires.Argument(!reversed || count == -1 || (startIndex == -1 ? root.Count - 1 : startIndex) - count + 1 >= 0);
_root = root;
_builder = builder;
_current = null;
_currentNodeEnumeratingByIndex = null;
_startIndex = startIndex >= 0 ? startIndex : (reversed ? root.Count - 1 : 0);
_currentIndex = _startIndex;
_count = count == -1 ? root.Count : count;
_remainingCount = _count;
_reversed = reversed;
_enumeratingBuilderVersion = builder != null ? builder.Version : -1;
_stackSlot0 = default;
_stackSlot1 = default;
_stackSlot2 = default;
_stackSlot3 = default;
_stackSlot4 = default;
_stackSlot5 = default;
_stackSlot6 = default;
_stackSlot7 = default;
_stackSlot8 = default;
_stackSlot9 = default;
_stackSlot10 = default;
_stackSlot11 = default;
_stackSlot12 = default;
_stackSlot13 = default;
_stackSlot14 = default;
_stackSlot15 = default;
_stackSlot16 = default;
_stackSlot17 = default;
_stackSlot18 = default;
_stackSlot19 = default;
_stackSlot20 = default;
_stackSlot21 = default;
_stackSlot22 = default;
_stackSlot23 = default;
_stackSlot24 = default;
_stackSlot25 = default;
_stackSlot26 = default;
_stackSlot27 = default;
_stackSlot28 = default;
_stackSlot29 = default;
_stackSlot30 = default;
_stackSlot31 = default;
_stackSlot32 = default;
_stackSlot33 = default;
_stackSlot34 = default;
_stackSlot35 = default;
_stackSlot36 = default;
_stackSlot37 = default;
_stackSlot38 = default;
_stackSlot39 = default;
_stackSlot40 = default;
_stackSlot41 = default;
_stackSlot42 = default;
_stackSlot43 = default;
_stackSlot44 = default;
_stackSlot45 = default;
_stackSlot46 = default;
_stackTopIndex = -1;
if (_count > 0)
{
this.ResetStack();
}
}
/// <summary>
/// Initializes a new instance of the <see cref="Builder"/> class.
/// </summary>
/// <param name="capacity">The initial capacity of the internal array.</param>
internal Builder(int capacity)
{
Requires.Range(capacity >= 0, "capacity");
_elements = new RefAsValueType <T> [capacity];
this.Count = 0;
}
/// <summary>
/// Copies the current contents to the specified <see cref="Span{T}"/>.
/// </summary>
/// <param name="destination">The <see cref="Span{T}"/> to copy to.</param>
public void CopyTo(Span <T> destination)
{
Requires.Range(this.Count <= destination.Length, nameof(destination));
new ReadOnlySpan <T>(_elements, 0, this.Count).CopyTo(destination);
}