/// <summary>
/// Creates a new <see cref="T:WebAssembly.Core.TypedArray`2"/> from the ReadOnlySpan.
/// </summary>
/// <returns>The new TypedArray/</returns>
/// <param name="span">ReadOnlySpan.</param>
public unsafe static T From(ReadOnlySpan <U> span)
{
// source has to be instantiated.
ValidateFromSource(span);
TypedArrayTypeCode type = (TypedArrayTypeCode)Type.GetTypeCode(typeof(U));
// Special case for Uint8ClampedArray, a clamped array which represents an array of 8-bit unsigned integers clamped to 0-255;
if (type == TypedArrayTypeCode.Uint8Array && typeof(T) == typeof(Uint8ClampedArray))
{
type = TypedArrayTypeCode.Uint8ClampedArray; // This is only passed to the JavaScript side so it knows it will be a Uint8ClampedArray
}
var bytes = MemoryMarshal.AsBytes(span);
fixed(byte *ptr = bytes)
{
var res = Runtime.TypedArrayFrom((int)ptr, 0, span.Length, Marshal.SizeOf <U> (), (int)type, out int exception);
if (exception != 0)
{
throw new JSException((string)res);
}
return((T)res);
}
}
public static unsafe T From(ReadOnlySpan <U> span)
{
// source has to be instantiated.
if (span == null)
{
throw new System.ArgumentException($"Invalid argument: {nameof(span)} can not be null.");
}
TypedArrayTypeCode type = (TypedArrayTypeCode)Type.GetTypeCode(typeof(U));
// Special case for Uint8ClampedArray, a clamped array which represents an array of 8-bit unsigned integers clamped to 0-255;
if (type == TypedArrayTypeCode.Uint8Array && typeof(T) == typeof(Uint8ClampedArray))
{
type = TypedArrayTypeCode.Uint8ClampedArray; // This is only passed to the JavaScript side so it knows it will be a Uint8ClampedArray
}
ReadOnlySpan <byte> bytes = MemoryMarshal.AsBytes(span);
fixed(byte *ptr = bytes)
{
object res = Interop.Runtime.TypedArrayFrom((int)ptr, 0, span.Length, Unsafe.SizeOf <U>(), (int)type, out int exception);
if (exception != 0)
{
throw new JSException((string)res);
}
return((T)res);
}
}
