ReadOnlySpanExtensions.cs

// Copyright (c) 2021 Eliah Kagan
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
// SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
// OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
// CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

using System;

namespace VidDraw {
    /// <summary>
    /// Extensions for spans, with stricter error checking for special cases.
    /// </summary>
    internal static class ReadOnlySpanExtensions {
        internal static void CopyToSameSize<T>(this ReadOnlySpan<T> source,
                                               Span<T> destination)
        {
            if (source.Length != destination.Length) {
                throw new ArgumentException(
                        paramName: nameof(destination),
                        message: "Destination not same length as source");
            }

            source.CopyTo(destination);
        }
    }
}