using System;
using System.Collections;
using System.Collections.Generic;
using System.Diagnostics;

namespace UnityEngine.Collections
{
	// Token: 0x020004C7 RID: 1223
	[NativeContainer]
	[NativeContainerSupportsMinMaxWriteRestriction]
	[DebuggerDisplay("Length = {Length}")]
	[DebuggerTypeProxy(typeof(NativeArrayDebugView<>))]
	public struct NativeArray<T> : IDisposable, IEnumerable<T>, IEnumerable where T : struct
	{
		// Token: 0x06003BB5 RID: 15285 RVA: 0x00068D54 File Offset: 0x00066F54
		public NativeArray(int length, Allocator allocMode)
		{
			NativeArray<T>.Allocate(length, allocMode, out this);
		}

		// Token: 0x06003BB6 RID: 15286 RVA: 0x00068D60 File Offset: 0x00066F60
		public NativeArray(T[] array, Allocator allocMode)
		{
			if (array == null)
			{
				throw new ArgumentNullException("array");
			}
			NativeArray<T>.Allocate(array.Length, allocMode, out this);
			this.FromArray(array);
		}

		// Token: 0x06003BB7 RID: 15287 RVA: 0x00068D88 File Offset: 0x00066F88
		internal NativeArray(IntPtr dataPointer, int length)
		{
			this = new NativeArray<T>(dataPointer, length, Allocator.None);
		}

		// Token: 0x06003BB8 RID: 15288 RVA: 0x00068D94 File Offset: 0x00066F94
		internal NativeArray(IntPtr dataPointer, int length, int stride, AtomicSafetyHandle safety, Allocator allocMode)
		{
			this.m_Buffer = dataPointer;
			this.m_Length = length;
			this.m_Stride = stride;
			this.m_AllocatorLabel = allocMode;
		}

		// Token: 0x06003BB9 RID: 15289 RVA: 0x00068DB4 File Offset: 0x00066FB4
		private NativeArray(IntPtr dataPointer, int length, Allocator allocMode)
		{
			if (dataPointer == IntPtr.Zero)
			{
				throw new ArgumentOutOfRangeException("dataPointer", "Pointer must not be zero");
			}
			if (length < 0)
			{
				throw new ArgumentOutOfRangeException("length", "Length must be >= 0");
			}
			this.m_Buffer = dataPointer;
			this.m_Length = length;
			this.m_Stride = UnsafeUtility.SizeOf<T>();
			this.m_AllocatorLabel = allocMode;
		}

		// Token: 0x17000D85 RID: 3461
		// (get) Token: 0x06003BBA RID: 15290 RVA: 0x00068E1C File Offset: 0x0006701C
		public int Length
		{
			get
			{
				return this.m_Length;
			}
		}

		// Token: 0x17000D86 RID: 3462
		public T this[int index]
		{
			get
			{
				if (index >= this.m_Length)
				{
					this.FailOutOfRangeError(index);
				}
				return UnsafeUtility.ReadArrayElement<T>(this.m_Buffer, index * this.m_Stride);
			}
			set
			{
				if (index >= this.m_Length)
				{
					this.FailOutOfRangeError(index);
				}
				UnsafeUtility.WriteArrayElement<T>(this.m_Buffer, index * this.m_Stride, value);
			}
		}

		// Token: 0x06003BBD RID: 15293 RVA: 0x00068EA0 File Offset: 0x000670A0
		public void Dispose()
		{
			UnsafeUtility.Free(this.m_Buffer, this.m_AllocatorLabel);
			this.m_Buffer = IntPtr.Zero;
			this.m_Length = 0;
		}

		// Token: 0x06003BBE RID: 15294 RVA: 0x00068EC8 File Offset: 0x000670C8
		public IntPtr GetUnsafeReadBufferPtr()
		{
			return this.m_Buffer;
		}

		// Token: 0x06003BBF RID: 15295 RVA: 0x00068EE4 File Offset: 0x000670E4
		public IntPtr GetUnsafeWriteBufferPtr()
		{
			return this.m_Buffer;
		}

		// Token: 0x06003BC0 RID: 15296 RVA: 0x00068F00 File Offset: 0x00067100
		public void FromArray(T[] array)
		{
			if (this.Length != array.Length)
			{
				throw new ArgumentException("Array length does not match the length of this instance");
			}
			for (int i = 0; i < this.Length; i++)
			{
				UnsafeUtility.WriteArrayElement<T>(this.m_Buffer, i * this.m_Stride, array[i]);
			}
		}

		// Token: 0x06003BC1 RID: 15297 RVA: 0x00068F58 File Offset: 0x00067158
		public T[] ToArray()
		{
			T[] array = new T[this.Length];
			for (int i = 0; i < this.Length; i++)
			{
				array[i] = UnsafeUtility.ReadArrayElement<T>(this.m_Buffer, i * this.m_Stride);
			}
			return array;
		}

		// Token: 0x06003BC2 RID: 15298 RVA: 0x00068FAC File Offset: 0x000671AC
		private void FailOutOfRangeError(int index)
		{
			throw new IndexOutOfRangeException(string.Format("Index {0} is out of range of '{1}' Length.", index, this.Length));
		}

		// Token: 0x06003BC3 RID: 15299 RVA: 0x00068FD0 File Offset: 0x000671D0
		private static void Allocate(int length, Allocator allocMode, out NativeArray<T> outArray)
		{
			if (allocMode <= Allocator.None)
			{
				throw new ArgumentOutOfRangeException("allocMode", "Allocator must be Temp, Job or Persistent");
			}
			if (length < 0)
			{
				throw new ArgumentOutOfRangeException("length", "Length must be >= 0");
			}
			long num = (long)UnsafeUtility.SizeOf<T>() * (long)length;
			if (num > 2147483647L)
			{
				throw new ArgumentOutOfRangeException("length", "Length * sizeof(T) cannot exceed " + int.MaxValue + "bytes");
			}
			outArray = new NativeArray<T>(UnsafeUtility.Malloc((int)num, UnsafeUtility.AlignOf<T>(), allocMode), length, allocMode);
		}

		// Token: 0x06003BC4 RID: 15300 RVA: 0x0006905C File Offset: 0x0006725C
		public IEnumerator<T> GetEnumerator()
		{
			return new NativeArray<T>.Enumerator(ref this);
		}

		// Token: 0x06003BC5 RID: 15301 RVA: 0x0006907C File Offset: 0x0006727C
		IEnumerator IEnumerable.GetEnumerator()
		{
			return this.GetEnumerator();
		}

		// Token: 0x040011EF RID: 4591
		private IntPtr m_Buffer;

		// Token: 0x040011F0 RID: 4592
		private int m_Length;

		// Token: 0x040011F1 RID: 4593
		private int m_Stride;

		// Token: 0x040011F2 RID: 4594
		private readonly Allocator m_AllocatorLabel;

		// Token: 0x020004C8 RID: 1224
		public struct Enumerator : IEnumerator<T>, IDisposable, IEnumerator
		{
			// Token: 0x06003BC6 RID: 15302 RVA: 0x00069098 File Offset: 0x00067298
			public Enumerator(ref NativeArray<T> array)
			{
				this.array = array;
				this.index = -1;
			}

			// Token: 0x06003BC7 RID: 15303 RVA: 0x000690B0 File Offset: 0x000672B0
			public void Dispose()
			{
			}

			// Token: 0x06003BC8 RID: 15304 RVA: 0x000690B4 File Offset: 0x000672B4
			public bool MoveNext()
			{
				this.index++;
				return this.index < this.array.Length;
			}

			// Token: 0x06003BC9 RID: 15305 RVA: 0x000690EC File Offset: 0x000672EC
			public void Reset()
			{
				this.index = -1;
			}

			// Token: 0x17000D88 RID: 3464
			// (get) Token: 0x06003BCA RID: 15306 RVA: 0x000690F8 File Offset: 0x000672F8
			public T Current
			{
				get
				{
					return this.array[this.index];
				}
			}

			// Token: 0x17000D87 RID: 3463
			// (get) Token: 0x06003BCB RID: 15307 RVA: 0x00069120 File Offset: 0x00067320
			object IEnumerator.Current
			{
				get
				{
					return this.Current;
				}
			}

			// Token: 0x040011F3 RID: 4595
			private NativeArray<T> array;

			// Token: 0x040011F4 RID: 4596
			private int index;
		}
	}
}