using System;
using System.Runtime.CompilerServices;
using Cpp2IlInjected;

namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Utilities.Zlib
{
	// Token: 0x02001937 RID: 6455
	[Token(Token = "0x2001937")]
	internal sealed class ZTree
	{
		// Token: 0x0600992C RID: 39212 RVA: 0x001FC5D4 File Offset: 0x001FA7D4
		[Token(Token = "0x600992C")]
		[Address(RVA = "0x163A470", Offset = "0x1639270", VA = "0x18163A470")]
		internal static int d_code(int dist)
		{
			if (dist < 256)
			{
				byte[] dist_code = ZTree._dist_code;
			}
			byte[] dist_code2 = ZTree._dist_code;
			throw new NullReferenceException();
		}

		// Token: 0x0600992D RID: 39213 RVA: 0x001FC5FC File Offset: 0x001FA7FC
		[Token(Token = "0x600992D")]
		[Address(RVA = "0x163A560", Offset = "0x1639360", VA = "0x18163A560")]
		internal void gen_bitlen(Deflate s)
		{
			StaticTree staticTree = this.stat_desc;
			short[] array = this.dyn_tree;
			short[] static_tree = staticTree.static_tree;
			int i = 0;
			int[] extra_bits = staticTree.extra_bits;
			int extra_base = staticTree.extra_base;
			int num = staticTree.max_length;
			short[] bl_count = s.bl_count;
			i++;
			bl_count[0] = (short)i;
			while (i <= 15)
			{
			}
			int[] heap = s.heap;
			int num2 = s.heap_max;
			num2++;
			array[0] = (short)i;
			int num3 = s.heap_max;
			num3++;
			if (num3 < 573)
			{
				int[] heap2 = s.heap;
				int num4 = array.Length;
				num2 = num3;
				int num5 = heap2[num2];
				num2 += num2;
				num2++;
				num2++;
				num4 = num;
				if (num2 <= num)
				{
					num4 = num2;
				}
				array[0] = (short)num4;
				short[] bl_count2 = s.bl_count;
				num5 -= extra_base;
				int num6 = extra_bits[num5];
				int num7 = num5 * num5;
				if (static_tree != 0)
				{
					num7 += num6;
				}
				num3++;
				if (i != 0)
				{
					short[] bl_count3 = s.bl_count;
					int num8 = num - 1;
					short num9 = bl_count3[num8];
					bl_count3[0] = num9;
					short[] bl_count4 = s.bl_count;
					num8++;
					short[] bl_count5 = s.bl_count;
					if (num != 0)
					{
						short[] bl_count6 = s.bl_count;
						if (num8 != 0)
						{
							int[] heap3 = s.heap;
							num = num3;
							int num10 = heap3[num];
							int num11 = array.Length;
							num10 += num10;
							int num12 = num10 + 1;
							if (num4 != num)
							{
								num11 = num;
								num11 -= num4;
								array[0] = (short)num;
							}
							while (num8 != 0)
							{
							}
						}
						while (num8 != 0)
						{
						}
					}
				}
			}
		}

		// Token: 0x0600992E RID: 39214 RVA: 0x001FC7B4 File Offset: 0x001FA9B4
		[Token(Token = "0x600992E")]
		[Address(RVA = "0x1639DB0", Offset = "0x1638BB0", VA = "0x181639DB0")]
		internal void build_tree(Deflate s)
		{
			StaticTree staticTree = this.stat_desc;
			short[] array = this.dyn_tree;
			short[] static_tree = staticTree.static_tree;
			int num = staticTree.elems;
			int num2 = 0;
			s.heap_max = (int)((ulong)573L);
			s.heap_len = num2;
			if (num > 0)
			{
				int length = array.Length;
				if ("{il2cpp array field local3->}" == num2)
				{
					num2++;
					array[0] = (short)num2;
				}
				int heap_len = s.heap_len;
				int[] heap = s.heap;
				int num3 = heap_len + 1;
				s.heap_len = num3;
				int num4 = heap_len + 1;
				heap[0] = num2;
				byte[] depth = s.depth;
				num2++;
				num2 += 2;
			}
			int num5 = s.heap_len;
			if (num5 < 2)
			{
				int[] heap2 = s.heap;
				int num6 = num5 + 1;
				s.heap_len = num6;
				if (num2 < 2)
				{
				}
				num5++;
				heap2[0] = num2;
				uint num7;
				array[0] = (short)num7;
				byte[] depth2 = s.depth;
				while (static_tree == 0)
				{
				}
			}
			this.max_code = 1;
			int i = s.heap_len;
			i -= 0;
			s.pqdownheap(array, i);
			while (i >= 1)
			{
			}
			int[] heap3 = s.heap;
			int heap_len2 = s.heap_len;
			int num8 = heap3[0];
			int num9 = heap_len2 - 1;
			s.heap_len = num9;
			int length2 = heap3.Length;
			int num10 = heap3[heap_len2];
			heap3[0] = num10;
			uint num11;
			s.pqdownheap(array, (int)num11);
			int[] heap4 = s.heap;
			int heap_max = s.heap_max;
			int num12 = heap4[0];
			int num13 = heap_max - 1;
			s.heap_max = num13;
			int num14 = heap_max - 1;
			heap4[0] = num8;
			int heap_max2 = s.heap_max;
			int[] heap5 = s.heap;
			int num15 = heap_max2 - 1;
			s.heap_max = num15;
			int num16 = heap_max2 - 1;
			heap5[0] = num12;
			int length3 = array.Length;
			short num17 = array[heap5];
			array[0] = num17;
			int length4 = s.depth.Length;
			byte b2;
			byte b3;
			byte b = Math.Max(b2, b3);
			array[0] = (short)num;
			int num18 = heap_max2 + 1;
			array[0] = (short)num;
			i += 2;
			int[] heap6 = s.heap;
			num++;
			heap6[0] = num;
			s.pqdownheap(array, 1);
			while (s.heap_len >= 2)
			{
			}
			int heap_max3 = s.heap_max;
			int[] heap7 = s.heap;
			int num19 = heap_max3 - 1;
			s.heap_max = num19;
			int num20 = s.heap[0];
			int num21 = heap_max3 - 1;
			heap7[0] = num20;
			short[] bl_count = s.bl_count;
			int num22;
			ZTree.gen_codes(array, num22, bl_count);
		}

		// Token: 0x0600992F RID: 39215 RVA: 0x001FCA54 File Offset: 0x001FAC54
		[Token(Token = "0x600992F")]
		[Address(RVA = "0x163AA10", Offset = "0x1639810", VA = "0x18163AA10")]
		internal static void gen_codes(short[] tree, int max_code, short[] bl_count)
		{
			short[] array = new short[16];
			int i = 0;
			i += i;
			array[0] = (short)i;
			while (1UL <= (ulong)15L)
			{
			}
			if (bl_count != 0)
			{
				short num = array[bl_count] + 1;
				array[0] = num;
				int num2 = 0;
				num2 += num2;
				tree[0] = (short)num2;
			}
			i++;
			i += 2;
			while (i <= max_code)
			{
			}
		}

		// Token: 0x06009930 RID: 39216 RVA: 0x001FCABC File Offset: 0x001FACBC
		[Token(Token = "0x6009930")]
		[Address(RVA = "0x1639D80", Offset = "0x1638B80", VA = "0x181639D80")]
		internal static int bi_reverse(int code, int len)
		{
			int num = 0;
			int num2 = len - 1;
			return num + num;
		}

		// Token: 0x06009931 RID: 39217 RVA: 0x001FCAD4 File Offset: 0x001FACD4
		[Token(Token = "0x6009931")]
		[Address(RVA = "0x3F5100", Offset = "0x3F3F00", VA = "0x1803F5100")]
		public ZTree()
		{
		}

		// Token: 0x06009932 RID: 39218 RVA: 0x001FCAE8 File Offset: 0x001FACE8
		// Note: this type is marked as 'beforefieldinit'.
		[Token(Token = "0x6009932")]
		[Address(RVA = "0x1639B90", Offset = "0x1638990", VA = "0x181639B90")]
		static ZTree()
		{
			int[] array = new int[29];
			RuntimeHelpers.InitializeArray(array, fieldof(<PrivateImplementationDetails>.67C0E784F3654B008A81E2988588CF4956CCF3DA).FieldHandle);
			ZTree.extra_lbits = array;
			int[] array2 = new int[30];
			RuntimeHelpers.InitializeArray(array2, fieldof(<PrivateImplementationDetails>.79D521E6E3E55103005E9CC3FA43B3174FAF090F).FieldHandle);
			ZTree.extra_dbits = array2;
			int[] array3 = new int[19];
			RuntimeHelpers.InitializeArray(array3, fieldof(<PrivateImplementationDetails>.8457F44B035C9073EE2D1F132D0A8AF5631DCDC8).FieldHandle);
			ZTree.extra_blbits = array3;
			byte[] array4 = new byte[19];
			RuntimeHelpers.InitializeArray(array4, fieldof(<PrivateImplementationDetails>.9F8365E9D6C62D3B47026EC465B05A7B5526B5CD).FieldHandle);
			ZTree.bl_order = array4;
			byte[] array5 = new byte[512];
			RuntimeHelpers.InitializeArray(array5, fieldof(<PrivateImplementationDetails>.3544182260B8A15D332367E48C7530FC0E901FD3).FieldHandle);
			ZTree._dist_code = array5;
			byte[] array6 = new byte[256];
			RuntimeHelpers.InitializeArray(array6, fieldof(<PrivateImplementationDetails>.6A316789EED01119DE92841832701A40AB0CABD6).FieldHandle);
			ZTree._length_code = array6;
			int[] array7 = new int[29];
			RuntimeHelpers.InitializeArray(array7, fieldof(<PrivateImplementationDetails>.2E868D9F2085DF93F11F58DE61C05E0D8A8F4A71).FieldHandle);
			ZTree.base_length = array7;
			int[] array8 = new int[30];
			RuntimeHelpers.InitializeArray(array8, fieldof(<PrivateImplementationDetails>.5581A70566F03554D8048EDBFC6E6B399AF9BCB1).FieldHandle);
			ZTree.base_dist = array8;
		}

		// Token: 0x04006852 RID: 26706
		[Token(Token = "0x4006852")]
		private const int MAX_BITS = 15;

		// Token: 0x04006853 RID: 26707
		[Token(Token = "0x4006853")]
		private const int BL_CODES = 19;

		// Token: 0x04006854 RID: 26708
		[Token(Token = "0x4006854")]
		private const int D_CODES = 30;

		// Token: 0x04006855 RID: 26709
		[Token(Token = "0x4006855")]
		private const int LITERALS = 256;

		// Token: 0x04006856 RID: 26710
		[Token(Token = "0x4006856")]
		private const int LENGTH_CODES = 29;

		// Token: 0x04006857 RID: 26711
		[Token(Token = "0x4006857")]
		private const int L_CODES = 286;

		// Token: 0x04006858 RID: 26712
		[Token(Token = "0x4006858")]
		private const int HEAP_SIZE = 573;

		// Token: 0x04006859 RID: 26713
		[Token(Token = "0x4006859")]
		internal const int MAX_BL_BITS = 7;

		// Token: 0x0400685A RID: 26714
		[Token(Token = "0x400685A")]
		internal const int END_BLOCK = 256;

		// Token: 0x0400685B RID: 26715
		[Token(Token = "0x400685B")]
		internal const int REP_3_6 = 16;

		// Token: 0x0400685C RID: 26716
		[Token(Token = "0x400685C")]
		internal const int REPZ_3_10 = 17;

		// Token: 0x0400685D RID: 26717
		[Token(Token = "0x400685D")]
		internal const int REPZ_11_138 = 18;

		// Token: 0x0400685E RID: 26718
		[Token(Token = "0x400685E")]
		internal static readonly int[] extra_lbits;

		// Token: 0x0400685F RID: 26719
		[Token(Token = "0x400685F")]
		internal static readonly int[] extra_dbits;

		// Token: 0x04006860 RID: 26720
		[Token(Token = "0x4006860")]
		internal static readonly int[] extra_blbits;

		// Token: 0x04006861 RID: 26721
		[Token(Token = "0x4006861")]
		internal static readonly byte[] bl_order;

		// Token: 0x04006862 RID: 26722
		[Token(Token = "0x4006862")]
		internal const int Buf_size = 16;

		// Token: 0x04006863 RID: 26723
		[Token(Token = "0x4006863")]
		internal const int DIST_CODE_LEN = 512;

		// Token: 0x04006864 RID: 26724
		[Token(Token = "0x4006864")]
		internal static readonly byte[] _dist_code;

		// Token: 0x04006865 RID: 26725
		[Token(Token = "0x4006865")]
		internal static readonly byte[] _length_code;

		// Token: 0x04006866 RID: 26726
		[Token(Token = "0x4006866")]
		internal static readonly int[] base_length;

		// Token: 0x04006867 RID: 26727
		[Token(Token = "0x4006867")]
		internal static readonly int[] base_dist;

		// Token: 0x04006868 RID: 26728
		[FieldOffset(Offset = "0x10")]
		[Token(Token = "0x4006868")]
		internal short[] dyn_tree;

		// Token: 0x04006869 RID: 26729
		[FieldOffset(Offset = "0x18")]
		[Token(Token = "0x4006869")]
		internal int max_code;

		// Token: 0x0400686A RID: 26730
		[FieldOffset(Offset = "0x20")]
		[Token(Token = "0x400686A")]
		internal StaticTree stat_desc;
	}
}