| static private ThrowIndexOutOfRangeException ( ) : void | ||
| return | void | |
public static void Clear(Array array, int index, int length)
{
if (array == null)
{
ThrowHelper.ThrowArgumentNullException(ExceptionArgument.array);
}
if (length < 0)
{
ThrowHelper.ThrowIndexOutOfRangeException();
}
int low = array.GetLowerBound(0);
if (index < low)
{
ThrowHelper.ThrowIndexOutOfRangeException();
}
index = index - low;
// re-ordered to avoid possible integer overflow
if (index > array.Length - length)
{
ThrowHelper.ThrowIndexOutOfRangeException();
}
ClearInternal(array, index, length);
}
/// <summary>
/// Returns a reference to specified element of the Span.
/// </summary>
/// <param name="index"></param>
/// <returns></returns>
/// <exception cref="System.IndexOutOfRangeException">
/// Thrown when index less than 0 or index greater than or equal to Length
/// </exception>
// TODO: https://github.com/dotnet/corefx/issues/13681
// Until we get over the hurdle of C# 7 tooling, this temporary method will simulate the intended "ref T" indexer for those
// who need bypass the workaround for performance.
//[MethodImpl(MethodImplOptions.AggressiveInlining)]
public ref T GetItem(int index)
{
if ((uint)index >= ((uint)_length))
{
ThrowHelper.ThrowIndexOutOfRangeException();
}
return(ref Unsafe.Add(ref _pointer.Value, index));
}
public char this [int index] {
[Intrinsic]
get {
if ((uint)index >= _stringLength)
{
ThrowHelper.ThrowIndexOutOfRangeException();
}
return(Unsafe.Add(ref _firstChar, index));
}
}
public char this[int index]
{
[Intrinsic]
get
{
if ((uint)index >= (uint)_stringLength)
{
ThrowHelper.ThrowIndexOutOfRangeException();
}
return(Unsafe.Add(ref _firstChar, (nint)(uint)index /* force zero-extension */));
}
}
/// <summary>
/// Fetches the element at the specified index.
/// </summary>
/// <exception cref="System.IndexOutOfRangeException">
/// Thrown when the specified <paramref name="index"/> is not in range (<0 or >&eq;Length).
/// </exception>
public T this[int index]
{
get
{
if ((uint)index >= (uint)_length)
{
ThrowHelper.ThrowIndexOutOfRangeException();
}
return(Unsafe.Add(ref DangerousGetPinnableReference(), index));
}
}
/// <summary>
/// Fetches the element at the specified index.
/// </summary>
/// <exception cref="System.IndexOutOfRangeException">
/// Thrown when the specified <paramref name="index"/> is not in range (<0 or >&eq;Length).
/// </exception>
public T this[int index]
{
get
{
if ((uint)index >= (uint)_length)
{
ThrowHelper.ThrowIndexOutOfRangeException();
}
return(Unsafe.Add(ref GetRawPointer(), index));
}
}
/// <summary>
/// Returns a reference to specified element of the Span.
/// </summary>
/// <param name="index"></param>
/// <returns></returns>
/// <exception cref="System.IndexOutOfRangeException">
/// Thrown when index less than 0 or index greater than or equal to Length
/// </exception>
public ref T this[int index]
{
[MethodImpl(MethodImplOptions.AggressiveInlining)]
get
{
if ((uint)index >= (uint)_length)
{
ThrowHelper.ThrowIndexOutOfRangeException();
}
return(ref Unsafe.Add(ref _pointer.Value, index));
}
}
/// <summary>
/// Returns the specified element of the read-only span.
/// </summary>
/// <param name="index"></param>
/// <returns></returns>
/// <exception cref="System.IndexOutOfRangeException">
/// Thrown when index less than 0 or index greater than or equal to Length
/// </exception>
public ref readonly T this[int index]
{
[Intrinsic]
[MethodImpl(MethodImplOptions.AggressiveInlining)]
[NonVersionable]
get
{
if ((uint)index >= (uint)_length)
{
ThrowHelper.ThrowIndexOutOfRangeException();
}
return(ref Unsafe.Add(ref _pointer.Value, index));
}
}
/// <summary>
/// Returns a reference to specified element of the Span.
/// </summary>
/// <param name="index"></param>
/// <returns></returns>
/// <exception cref="System.IndexOutOfRangeException">
/// Thrown when index less than 0 or index greater than or equal to Length
/// </exception>
public ref T this[int index]
{
[Intrinsic]
[MethodImpl(MethodImplOptions.AggressiveInlining)]
[NonVersionable]
get
{
if ((uint)index >= (uint)_length)
{
ThrowHelper.ThrowIndexOutOfRangeException();
}
return(ref Unsafe.Add(ref _reference, (nint)(uint)index /* force zero-extension */));
}
}
public ref T GetItem(int index)
{
if ((uint)index >= ((uint)_length))
{
ThrowHelper.ThrowIndexOutOfRangeException();
}
if (_pinnable == null)
{
unsafe { return(ref Unsafe.Add <T>(ref Unsafe.AsRef <T>(_byteOffset.ToPointer()), index)); }
}
else
{
return(ref Unsafe.Add <T>(ref Unsafe.AddByteOffset <T>(ref _pinnable.Data, _byteOffset), index));
}
}
public static unsafe void Clear(Array array, int index, int length)
{
if (array == null)
{
ThrowHelper.ThrowArgumentNullException(ExceptionArgument.array);
}
int lowerBound = array.GetLowerBound(0);
int elementSize = array.GetElementSize();
nuint numComponents = (nuint)Unsafe.As <RawData> (array).Count;
int offset = index - lowerBound;
if (index < lowerBound || offset < 0 || length < 0 || (uint)(offset + length) > numComponents)
{
ThrowHelper.ThrowIndexOutOfRangeException();
}
ref byte ptr = ref Unsafe.AddByteOffset(ref array.GetRawSzArrayData(), (uint)offset * (nuint)elementSize);
/// <summary>
/// Returns the specified element of the read-only span.
/// </summary>
/// <param name="index"></param>
/// <returns></returns>
/// <exception cref="System.IndexOutOfRangeException">
/// Thrown when index less than 0 or index greater than or equal to Length
/// </exception>
public ref readonly T this[int index]
{
[MethodImpl(MethodImplOptions.AggressiveInlining)]
get
{
if ((uint)index >= ((uint)_length))
{
ThrowHelper.ThrowIndexOutOfRangeException();
}
if (_pinnable == null)
{
unsafe { return(ref Unsafe.Add <T>(ref Unsafe.AsRef <T>(_byteOffset.ToPointer()), index)); }
}
else
{
return(ref Unsafe.Add <T>(ref Unsafe.AddByteOffset <T>(ref _pinnable.Data, _byteOffset), index));
}
}
}
