//-----------------------------------------------------------------------
// -----------------------------------------------------------------------
// file="Matrix"
// Project: StgSharp
// AuthorGroup: Nitload
// Copyright (c) Nitload. 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 StgSharp.HighPerformance;
using StgSharp.Mathematics.Numeric;
using System;
using System.Numerics;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;

// using hlsfHandle = global::StgSharp.HighPerformance.Memory.HybridLayerSegregatedFitAllocationHandle;

namespace StgSharp.Mathematics.Numeric
{
    public unsafe partial class Matrix<T> where T : unmanaged, INumber<T>
    {

        private protected static readonly int t_count = 16 / sizeof(T);

        private protected static readonly int t_size = sizeof(T);
        private MatrixMetadata _enumeration;

        private MatrixStorage<T> _buffer;

        private protected Matrix() { }

        public ref T this[int column, int row]
        {
            get => throw new NotImplementedException();
        }

        public unsafe Matrix<T> this[
                                ReadOnlySpan<MatrixIndex> column,
                                ReadOnlySpan<MatrixIndex> row]
        {
            get { throw new NotImplementedException(); }
            set { throw new NotImplementedException(); }
        }

        /// <summary>
        ///   Length of the matrix in columns.
        /// </summary>
        public int ColumnLength { get; init; }

        /// <summary>
        ///   Length of the matrix in rows.
        /// </summary>
        public int RowLength { get; init; }

        public MatrixLayout Layout { get; init; }

        internal MatrixKernel<T>* Buffer { get; }

        protected internal int KernelColumnLength { get; init; }

        protected internal int KernelRowLength { get; init; }

        public ref MatrixKernel<T> GetMatrixKernel(int column, int row)
        {
            if (_enumeration.GetCurrentKernelIndex) { } else { }
        }

        private protected void AssertIndex(int column, int row)
        {
            if (column < 0 || column >= ColumnLength) {
                throw new ArgumentOutOfRangeException(nameof(column));
            }

            if (row < 0 || row >= RowLength) {
                throw new ArgumentOutOfRangeException(nameof(row));
            }
        }

    }
}