//-----------------------------------------------------------------------
// -----------------------------------------------------------------------
// file="M128.cs"
// Project: StgSharp
// AuthorGroup: Nitload Space
// Copyright (c) Nitload Space. All rights reserved.
//     
// Permission is hereby granted, free of charge, to any person 
// obtaining a copy of this software and associated documentation 
// files (the ¡°Software¡±), to deal in the Software without restriction, 
// including without limitation the rights to use, copy, modify, merge,
// publish, distribute, sublicense, and/or sell copies of the Software, 
// and to permit persons to whom the Software is furnished to do so, 
// subject to the following conditions:
//     
// The above copyright notice and 
// this permission notice shall be included in all copies 
// or substantial portions of the Software.
//     
// THE SOFTWARE IS PROVIDED ¡°AS IS¡±, 
// WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
// ARISING FROM, OUT OF OR IN CONNECTION WITH 
// THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//     
// -----------------------------------------------------------------------
// -----------------------------------------------------------------------
using System;
using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
using System.Numerics;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using System.Runtime.Intrinsics;
using System.Runtime.Intrinsics.X86;

using System.Text;

namespace StgSharp.HighPerformance
{
    [StructLayout(LayoutKind.Explicit, Pack = 16)]
    public unsafe struct M128 : IRegisterPresentation
    {

        [FieldOffset(0)] internal fixed byte Buffer[16];
        [FieldOffset(0)] internal Vector128<float> Vec;

        internal M128(Vector4 v)
        {
            Vec = v.AsVector128();
        }

        public ref T AsRef<T>() where T: unmanaged, INumber<T>
        {
            return ref Unsafe.As<byte, T>(ref Buffer[0]);
        }

        [MethodImpl(MethodImplOptions.AggressiveInlining)]
        public readonly Vector4 AsVector4()
        {
            return Vec.AsVector4();
        }

        public override readonly bool Equals([NotNullWhen(true)] object obj)
        {
            return obj is M128 other && this == other;
        }

        public override readonly int GetHashCode()
        {
            return Vec.GetHashCode();
        }

        [MethodImpl(MethodImplOptions.AggressiveInlining)]
        public ref T Member<T>(int index) where T: unmanaged, INumber<T>
        {
            return ref Unsafe.Add(ref AsRef<T>(), index);
        }

        public override string ToString()
        {
            return string.Empty;
        }

        public string ToString(int sample)
        {
            string str = string.Empty;
            for (int i = 15; i >= 0; i--) {
                str += $"{Convert.ToString(Buffer[i], sample)} ";
            }
            return str;
        }

        [MethodImpl(MethodImplOptions.AggressiveInlining)]
        public static bool operator !=(M128 left, M128 right)
        {
            return left.Vec != right.Vec;
        }

        [MethodImpl(MethodImplOptions.AggressiveInlining)]
        public static bool operator ==(M128 left, M128 right)
        {
            return left.Vec == right.Vec;
        }

        [MethodImpl(MethodImplOptions.AggressiveInlining)]
        public static explicit operator Vector128<byte>(M128 m)
        {
            return m.Vec.As<float, byte>();
        }

        [MethodImpl(MethodImplOptions.AggressiveInlining)]
        public static explicit operator Vector128<double>(M128 m)
        {
            return m.Vec.As<float, double>();
        }

        [MethodImpl(MethodImplOptions.AggressiveInlining)]
        public static explicit operator Vector128<float>(M128 m)
        {
            return m.Vec.As<float, float>();
        }

        [MethodImpl(MethodImplOptions.AggressiveInlining)]
        public static explicit operator Vector128<int>(M128 m)
        {
            return m.Vec.As<float, int>();
        }

        [MethodImpl(MethodImplOptions.AggressiveInlining)]
        public static explicit operator Vector128<long>(M128 m)
        {
            return m.Vec.As<float, long>();
        }

        [MethodImpl(MethodImplOptions.AggressiveInlining)]
        public static explicit operator Vector128<sbyte>(M128 m)
        {
            return m.Vec.As<float, sbyte>();
        }

        [MethodImpl(MethodImplOptions.AggressiveInlining)]
        public static explicit operator Vector128<short>(M128 m)
        {
            return m.Vec.As<float, short>();
        }

        [MethodImpl(MethodImplOptions.AggressiveInlining)]
        public static explicit operator Vector128<uint>(M128 m)
        {
            return m.Vec.As<float, uint>();
        }

        [MethodImpl(MethodImplOptions.AggressiveInlining)]
        public static explicit operator Vector128<ulong>(M128 m)
        {
            return m.Vec.As<float, ulong>();
        }

        [MethodImpl(MethodImplOptions.AggressiveInlining)]
        public static explicit operator Vector128<ushort>(M128 m)
        {
            return m.Vec.As<float, ushort>();
        }

    }
}