using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace CSharpUtil
{
    public static class BitsUtil
    {
        #region byte extension
        /// <summary>
        /// 返回Int数据中某一位是否为1
        /// </summary>
        /// <param name="value"></param>
        /// <param name="index">32位数据的从右向左的偏移位索引(0~31)</param>
        /// <returns>true表示该位为1，false表示该位为0</returns>
        public static bool GetBitValue(this byte value, int index)
        {
            Trace.Assert(index >= 0 && index <= 7, $"{nameof(index)} is Out Of Range(0..7).");//索引出错
            int val = 1 << index;
            return (value & val) == val;
        }
        /// <summary>
        /// 设定Int数据中某一位的值
        /// </summary>
        /// <param name="value">位设定前的值</param>
        /// <param name="index">32位数据的从右向左的偏移位索引(0~31)</param>
        /// <param name="bitValue">true设该位为1,false设为0</param>
        /// <returns>返回位设定后的值</returns>
        public static byte SetBitValue(ref this byte value, int index, bool bitValue)
        {
            Trace.Assert(index >= 0 && index <= 7, $"{nameof(index)} is Out Of Range(0..7).");//索引出错
            var val = (byte)(1 << index);
            value = (byte)(bitValue ? (value | val) : (value & ~val));
            return value;
        }
        /// <summary>
        /// 根据Int类型的值，返回用1或0(对应True或Flase)填充的数组
        /// <remarks>从右侧开始向左索引(0~31)</remarks>
        /// </summary>
        /// <param name="value"></param>
        /// <returns></returns>
        public static IEnumerable<bool> GetBitList(this byte value)
        {
            var list = new List<bool>(8);
            for (var i = 0; i <= 7; i++)
            {
                int val = 1 << i;
                list.Add((value & val) == val);
            }
            return list;
        }
        /// <summary>
        /// 
        /// </summary>
        /// <param name="value"></param>
        /// <param name="index"></param>
        /// <returns></returns>
        public static bool Bit(this byte value, int index) => GetBitValue(value, index);
        /// <summary>
        /// 
        /// </summary>
        /// <param name="value"></param>
        /// <returns></returns>
        public static bool[] Bits(this byte value)
        {
            var arr = new bool[8];
            for (var i = 0; i <= 7; i++)
            {
                int x = 1 << i;
                arr[i] = ((value & x) == x);
            }
            return arr;
        }
        #endregion

        #region ushort extension
        /// <summary>
        /// 返回Int数据中某一位是否为1
        /// </summary>
        /// <param name="value"></param>
        /// <param name="index">32位数据的从右向左的偏移位索引(0~31)</param>
        /// <returns>true表示该位为1，false表示该位为0</returns>
        public static bool GetBitValue(this ushort value, int index)
        {
            Trace.Assert(index >= 0 && index <= 15, $"{nameof(index)} is Out Of Range(0..15).");//索引出错
            int val = 1 << index;
            return (value & val) == val;
        }
        /// <summary>
        /// 设定Int数据中某一位的值
        /// </summary>
        /// <param name="value">位设定前的值</param>
        /// <param name="index">32位数据的从右向左的偏移位索引(0~31)</param>
        /// <param name="bitValue">true设该位为1,false设为0</param>
        /// <returns>返回位设定后的值</returns>
        public static ushort SetBitValue(ref this ushort value, int index, bool bitValue)
        {
            Trace.Assert(index >= 0 && index <= 15, $"{nameof(index)} is Out Of Range(0..15).");//索引出错
            var val = (ushort)(1 << index);
            value = (ushort)(bitValue ? (value | val) : (value & ~val));
            return value;
        }
        /// <summary>
        /// 根据Int类型的值，返回用1或0(对应True或Flase)填充的数组
        /// <remarks>从右侧开始向左索引(0~31)</remarks>
        /// </summary>
        /// <param name="value"></param>
        /// <returns></returns>
        public static IEnumerable<bool> GetBitList(this ushort value)
        {
            var list = new List<bool>(16);
            for (var i = 0; i <= 15; i++)
            {
                int val = 1 << i;
                list.Add((value & val) == val);
            }
            return list;
        }
        /// <summary>
        /// 
        /// </summary>
        /// <param name="value"></param>
        /// <param name="index"></param>
        /// <returns></returns>
        public static bool Bit(this ushort value, int index) => GetBitValue(value, index);
        /// <summary>
        /// 
        /// </summary>
        /// <param name="value"></param>
        /// <returns></returns>
        public static bool[] Bits(this ushort value)
        {
            var arr = new bool[16];
            for (var i = 0; i <= 15; i++)
            {
                int x = 1 << i;
                arr[i] = ((value & x) == x);
            }
            return arr;
        }
        #endregion

        #region short extension
        /// <summary>
        /// 返回Int数据中某一位是否为1
        /// </summary>
        /// <param name="value"></param>
        /// <param name="index">32位数据的从右向左的偏移位索引(0~31)</param>
        /// <returns>true表示该位为1，false表示该位为0</returns>
        public static bool GetBitValue(this short value, int index)
        {
            Trace.Assert(index >= 0 && index <= 15, $"{nameof(index)} is Out Of Range(0..15).");//索引出错
            int val = 1 << index;
            return (value & val) == val;
        }
        /// <summary>
        /// 设定Int数据中某一位的值
        /// </summary>
        /// <param name="value">位设定前的值</param>
        /// <param name="index">32位数据的从右向左的偏移位索引(0~31)</param>
        /// <param name="bitValue">true设该位为1,false设为0</param>
        /// <returns>返回位设定后的值</returns>
        public static short SetBitValue(ref this short value, int index, bool bitValue)
        {
            Trace.Assert(index >= 0 && index <= 15, $"{nameof(index)} is Out Of Range(0..15).");//索引出错
            var val = (short)(1 << index);
            value = (short)(bitValue ? (value | val) : (value & ~val));
            return value;
        }
        /// <summary>
        /// 根据Int类型的值，返回用1或0(对应True或Flase)填充的数组
        /// <remarks>从右侧开始向左索引(0~31)</remarks>
        /// </summary>
        /// <param name="value"></param>
        /// <returns></returns>
        public static IEnumerable<bool> GetBitList(this short value)
        {
            var list = new List<bool>(16);
            for (var i = 0; i <= 15; i++)
            {
                int val = 1 << i;
                list.Add((value & val) == val);
            }
            return list;
        }
        /// <summary>
        /// 
        /// </summary>
        /// <param name="value"></param>
        /// <param name="index"></param>
        /// <returns></returns>
        public static bool Bit(this short value, int index) => GetBitValue(value, index);
        /// <summary>
        /// 
        /// </summary>
        /// <param name="value"></param>
        /// <returns></returns>
        public static bool[] Bits(this short value)
        {
            var arr = new bool[16];
            for (var i = 0; i <= 15; i++)
            {
                int x = 1 << i;
                arr[i] = ((value & x) == x);
            }
            return arr;
        }
        #endregion

        #region Int extension
        /// <summary>
        /// 返回Int数据中某一位是否为1
        /// </summary>
        /// <param name="value"></param>
        /// <param name="index">32位数据的从右向左的偏移位索引(0~31)</param>
        /// <returns>true表示该位为1，false表示该位为0</returns>
        public static bool GetBitValue(this int value, int index)
        {
            Trace.Assert(index >= 0 && index <= 31, $"{nameof(index)} is Out Of Range(0..31).");//索引出错
            int val = 1 << index;
            return (value & val) == val;
        }
        /// <summary>
        /// 设定Int数据中某一位的值
        /// </summary>
        /// <param name="value">位设定前的值</param>
        /// <param name="index">32位数据的从右向左的偏移位索引(0~31)</param>
        /// <param name="bitValue">true设该位为1,false设为0</param>
        /// <returns>返回位设定后的值</returns>
        public static int SetBitValue(ref this int value, int index, bool bitValue)
        {
            Trace.Assert(index >= 0 && index <= 31, $"{nameof(index)} is Out Of Range(0..31).");//索引出错
            int val = 1 << index;
            value = bitValue ? (value | val) : (value & ~val);
            return value;
        }
        /// <summary>
        /// 根据Int类型的值，返回用1或0(对应True或Flase)填充的数组
        /// <remarks>从右侧开始向左索引(0~31)</remarks>
        /// </summary>
        /// <param name="value"></param>
        /// <returns></returns>
        public static IEnumerable<bool> GetBitList(this int value)
        {
            var list = new List<bool>(32);
            for (var i = 0; i <= 31; i++)
            {
                int val = 1 << i;
                list.Add((value & val) == val);
            }
            return list;
        }
        /// <summary>
        /// 
        /// </summary>
        /// <param name="value"></param>
        /// <param name="index"></param>
        /// <returns></returns>
        public static bool Bit(this int value, int index) => GetBitValue(value,index);
        /// <summary>
        /// 
        /// </summary>
        /// <param name="value"></param>
        /// <returns></returns>
        public static bool[] Bits(this int value)
        {
            var arr = new bool[32];
            for (var i = 0; i <= 31; i++)
            {
                int x = 1 << i;
                arr[i] = ((value & x) == x);
            }
            return arr;
        }
        #endregion

        #region uint extension
        /// <summary>
        /// 返回Int数据中某一位是否为1
        /// </summary>
        /// <param name="value"></param>
        /// <param name="index">32位数据的从右向左的偏移位索引(0~31)</param>
        /// <returns>true表示该位为1，false表示该位为0</returns>
        public static bool GetBitValue(this uint value, int index)
        {
            Trace.Assert(index >= 0 && index <= 31, $"{nameof(index)} is Out Of Range(0..31).");//索引出错
            uint val = 1u << index;
            return (value & val) == val;
        }
        /// <summary>
        /// 设定Int数据中某一位的值
        /// </summary>
        /// <param name="value">位设定前的值</param>
        /// <param name="index">32位数据的从右向左的偏移位索引(0~31)</param>
        /// <param name="bitValue">true设该位为1,false设为0</param>
        /// <returns>返回位设定后的值</returns>
        public static uint SetBitValue(ref this uint value, int index, bool bitValue)
        {
            Trace.Assert(index >= 0 && index <= 31, $"{nameof(index)} is Out Of Range(0..31).");//索引出错
            uint val = 1u << index;
            value = bitValue ? (value | val) : (value & ~val);
            return value;
        }
        /// <summary>
        /// 根据Int类型的值，返回用1或0(对应True或Flase)填充的数组
        /// <remarks>从右侧开始向左索引(0~31)</remarks>
        /// </summary>
        /// <param name="value"></param>
        /// <returns></returns>
        public static IEnumerable<bool> GetBitList(this uint value)
        {
            var list = new List<bool>(32);
            for (var i = 0; i <= 31; i++)
            {
                uint val = 1u << i;
                list.Add((value & val) == val);
            }
            return list;
        }
        /// <summary>
        /// 
        /// </summary>
        /// <param name="value"></param>
        /// <param name="index"></param>
        /// <returns></returns>
        public static bool Bit(this uint value, int index) => GetBitValue(value, index);
        /// <summary>
        /// 
        /// </summary>
        /// <param name="value"></param>
        /// <returns></returns>
        public static bool[] Bits(this uint value)
        {
            var arr = new bool[32];
            for (var i = 0; i <= 31; i++)
            {
                uint x = 1u << i;
                arr[i] = ((value & x) == x);
            }
            return arr;
        }
        #endregion

        #region Long extension
        /// <summary>
        /// 返回Int数据中某一位是否为1
        /// </summary>
        /// <param name="value"></param>
        /// <param name="index">32位数据的从右向左的偏移位索引(0~31)</param>
        /// <returns>true表示该位为1，false表示该位为0</returns>
        public static bool GetBitValue(this long value, int index)
        {
            Trace.Assert(index >= 0 && index <= 63, $"{nameof(index)} is Out Of Range(0..63).");//索引出错
            long val = 1 << index;
            return (value & val) == val;
        }
        /// <summary>
        /// 设定Int数据中某一位的值
        /// </summary>
        /// <param name="value">位设定前的值</param>
        /// <param name="index">32位数据的从右向左的偏移位索引(0~31)</param>
        /// <param name="bitValue">true设该位为1,false设为0</param>
        /// <returns>返回位设定后的值</returns>
        public static long SetBitValue(ref this long value, int index, bool bitValue)
        {
            Trace.Assert(index >= 0 && index <= 63, $"{nameof(index)} is Out Of Range(0..63).");//索引出错
            long val = 1 << index;
            value = bitValue ? (value | val) : (value & ~val);
            return value;
        }
        /// <summary>
        /// 根据Int类型的值，返回用1或0(对应True或Flase)填充的数组
        /// <remarks>从右侧开始向左索引(0~31)</remarks>
        /// </summary>
        /// <param name="value"></param>
        /// <returns></returns>
        public static IEnumerable<bool> GetBitList(this long value)
        {
            var list = new List<bool>(64);
            for (var i = 0; i <= 63; i++)
            {
                long val = 1 << i;
                list.Add((value & val) == val);
            }
            return list;
        }
        /// <summary>
        /// 
        /// </summary>
        /// <param name="value"></param>
        /// <param name="index"></param>
        /// <returns></returns>
        public static bool Bit(this long value, int index) => GetBitValue(value, index);
        /// <summary>
        /// 
        /// </summary>
        /// <param name="value"></param>
        /// <returns></returns>
        public static bool[] Bits(this long value)
        {
            var arr = new bool[64];
            for (var i = 0; i <= 31; i++)
            {
                long x = 1 << i;
                arr[i] = ((value & x) == x);
            }
            return arr;
        }
        #endregion
    }
}