InsertRange() [1/3]

ImmutableArray< T > System.Collections.Immutable.ImmutableArray< T >.InsertRange ( int index, IEnumerable< T > items )

inline

Implements System.Collections.Immutable.IImmutableList< T >.

Definition at line 1055 of file ImmutableArray.cs.

    {
        ImmutableArray<T> result = this;
        result.ThrowNullRefIfNotInitialized();
        Requires.Range(index >= 0 && index <= result.Length, "index");
        Requires.NotNull(items, "items");
        if (result.Length == 0)
        {
            return ImmutableArray.CreateRange(items);
        }
        int count = ImmutableExtensions.GetCount(ref items);
        if (count == 0)
        {
            return result;
        }
        T[] array = new T[result.Length + count];
        if (index != 0)
        {
            Array.Copy(result.array, array, index);
        }
        if (index != result.Length)
        {
            Array.Copy(result.array, index, array, index + count, result.Length - index);
        }
        if (!items.TryCopyTo(array, index))
        {
            int num = index;
            foreach (T item in items)
            {
                array[num++] = item;
            }
        }
        return new ImmutableArray<T>(array);
    }

References System.Collections.Immutable.ImmutableArray< T >.array, System.Array.Copy(), System.count, System.index, System.item, and System.Collections.Immutable.Requires.Range().