CPF/CPF.ReoGrid/Data/TriangleTreeArray.cs

using System;

namespace CPF.ReoGrid.Data
{
	[Serializable]
	public sealed class TriangleTreeArray<T>
	{
		public T this[int row, int col]
		{
			get
			{
				int num = row >> 12;
				int num2 = col >> 8;
				T[,][,] array = this.data[num, num2];
				bool flag = array == null;
				T result;
				if (flag)
				{
					result = default(T);
				}
				else
				{
					int num3 = (row >> 6) % 64;
					int num4 = (col >> 4) % 16;
					T[,] array2 = array[num3, num4];
					result = ((array2 == null) ? default(T) : array2[row % 64, col % 16]);
				}
				return result;
			}
			set
			{
				int num = row >> 12;
				int num2 = col >> 8;
				bool flag = this.data[num, num2] == null;
				if (flag)
				{
					bool flag2 = value == null;
					if (flag2)
					{
						return;
					}
					this.data[num, num2] = new T[64, 16][,];
				}
				int num3 = (row >> 6) % 64;
				int num4 = (col >> 4) % 16;
				bool flag3 = this.data[num, num2][num3, num4] == null;
				if (flag3)
				{
					bool flag4 = value == null;
					if (flag4)
					{
						return;
					}
					this.data[num, num2][num3, num4] = new T[64, 16];
				}
				this.data[num, num2][num3, num4][row % 64, col % 16] = value;
			}
		}

		public bool IsPageNull(int row, int col)
		{
			int num = row >> 12;
			int num2 = col >> 8;
			T[,][,] array = this.data[num, num2];
			bool flag = array == null;
			bool result;
			if (flag)
			{
				result = true;
			}
			else
			{
				int num3 = (row >> 6) % 64;
				int num4 = (col >> 4) % 16;
				result = (array[num3, num4] == null);
			}
			return result;
		}

		public int Rows
		{
			get
			{
				return 262144;
			}
		}

		public int Cols
		{
			get
			{
				return 4096;
			}
		}

		public void Iterate(int row, int col, int rows, int cols, bool ignoreNull, Func<int, int, T, bool> iterator)
		{
			int num = row + rows;
			int num2 = col + cols;
			for (int i = row; i < num; i++)
			{
				int j = col;
				while (j < num2)
				{
					bool flag = this.IsPageNull(i, j);
					if (flag)
					{
						j += 16 - j % 16;
					}
					else
					{
						bool flag2 = !iterator(i, j, this[i, j]);
						if (flag2)
						{
							return;
						}
						j++;
					}
				}
			}
		}

		public const int RowSize = 64;

		public const int ColSize = 16;

		private T[,][,][,] data = new T[64, 16][,][,];
	}
}