CPF/CPF.Mac/Mac/Foundation/NSJsonSerialization.cs

using CPF.Mac.ObjCRuntime;
using System;
using System.ComponentModel;
using System.Runtime.InteropServices;

namespace CPF.Mac.Foundation
{
	[Register("NSJSONSerialization", true)]
	public class NSJsonSerialization : NSObject
	{
		private static readonly IntPtr selIsValidJSONObject_Handle = Selector.GetHandle("isValidJSONObject:");

		private static readonly IntPtr selDataWithJSONObjectOptionsError_Handle = Selector.GetHandle("dataWithJSONObject:options:error:");

		private static readonly IntPtr selJSONObjectWithDataOptionsError_Handle = Selector.GetHandle("JSONObjectWithData:options:error:");

		private static readonly IntPtr selWriteJSONObjectToStreamOptionsError_Handle = Selector.GetHandle("writeJSONObject:toStream:options:error:");

		private static readonly IntPtr selJSONObjectWithStreamOptionsError_Handle = Selector.GetHandle("JSONObjectWithStream:options:error:");

		private static readonly IntPtr class_ptr = Class.GetHandle("NSJSONSerialization");

		public override IntPtr ClassHandle => class_ptr;

		[EditorBrowsable(EditorBrowsableState.Advanced)]
		[Export("initWithCoder:")]
		public NSJsonSerialization(NSCoder coder)
			: base(NSObjectFlag.Empty)
		{
			if (IsDirectBinding)
			{
				base.Handle = Messaging.IntPtr_objc_msgSend_IntPtr(base.Handle, Selector.InitWithCoder, coder.Handle);
			}
			else
			{
				base.Handle = Messaging.IntPtr_objc_msgSendSuper_IntPtr(base.SuperHandle, Selector.InitWithCoder, coder.Handle);
			}
		}

		[EditorBrowsable(EditorBrowsableState.Advanced)]
		public NSJsonSerialization(NSObjectFlag t)
			: base(t)
		{
		}

		[EditorBrowsable(EditorBrowsableState.Advanced)]
		public NSJsonSerialization(IntPtr handle)
			: base(handle)
		{
		}

		[Export("isValidJSONObject:")]
		public static bool IsValidJSONObject(NSObject obj)
		{
			if (obj == null)
			{
				throw new ArgumentNullException("obj");
			}
			return Messaging.bool_objc_msgSend_IntPtr(class_ptr, selIsValidJSONObject_Handle, obj.Handle);
		}

		[Export("dataWithJSONObject:options:error:")]
		public static NSData Serialize(NSObject obj, NSJsonWritingOptions opt, out NSError error)
		{
			if (obj == null)
			{
				throw new ArgumentNullException("obj");
			}
			IntPtr intPtr = Marshal.AllocHGlobal(4);
			Marshal.WriteInt32(intPtr, 0);
			NSData result = (NSData)Runtime.GetNSObject(Messaging.IntPtr_objc_msgSend_IntPtr_UInt64_IntPtr(class_ptr, selDataWithJSONObjectOptionsError_Handle, obj.Handle, (ulong)opt, intPtr));
			IntPtr intPtr2 = Marshal.ReadIntPtr(intPtr);
			error = ((intPtr2 != IntPtr.Zero) ? ((NSError)Runtime.GetNSObject(intPtr2)) : null);
			Marshal.FreeHGlobal(intPtr);
			return result;
		}

		[Export("JSONObjectWithData:options:error:")]
		public static NSObject Deserialize(NSData data, NSJsonReadingOptions opt, NSError error)
		{
			if (data == null)
			{
				throw new ArgumentNullException("data");
			}
			if (error == null)
			{
				throw new ArgumentNullException("error");
			}
			return Runtime.GetNSObject(Messaging.IntPtr_objc_msgSend_IntPtr_UInt64_IntPtr(class_ptr, selJSONObjectWithDataOptionsError_Handle, data.Handle, (ulong)opt, error.Handle));
		}

		[Export("writeJSONObject:toStream:options:error:")]
		public static long Serialize(NSObject obj, NSOutputStream stream, NSJsonWritingOptions opt, out NSError error)
		{
			if (obj == null)
			{
				throw new ArgumentNullException("obj");
			}
			if (stream == null)
			{
				throw new ArgumentNullException("stream");
			}
			IntPtr intPtr = Marshal.AllocHGlobal(4);
			Marshal.WriteInt32(intPtr, 0);
			long result = Messaging.Int64_objc_msgSend_IntPtr_IntPtr_UInt64_IntPtr(class_ptr, selWriteJSONObjectToStreamOptionsError_Handle, obj.Handle, stream.Handle, (ulong)opt, intPtr);
			IntPtr intPtr2 = Marshal.ReadIntPtr(intPtr);
			error = ((intPtr2 != IntPtr.Zero) ? ((NSError)Runtime.GetNSObject(intPtr2)) : null);
			Marshal.FreeHGlobal(intPtr);
			return result;
		}

		[Export("JSONObjectWithStream:options:error:")]
		public static NSObject Deserialize(NSInputStream stream, NSJsonReadingOptions opt, out NSError error)
		{
			if (stream == null)
			{
				throw new ArgumentNullException("stream");
			}
			IntPtr intPtr = Marshal.AllocHGlobal(4);
			Marshal.WriteInt32(intPtr, 0);
			NSObject nSObject = Runtime.GetNSObject(Messaging.IntPtr_objc_msgSend_IntPtr_UInt64_IntPtr(class_ptr, selJSONObjectWithStreamOptionsError_Handle, stream.Handle, (ulong)opt, intPtr));
			IntPtr intPtr2 = Marshal.ReadIntPtr(intPtr);
			error = ((intPtr2 != IntPtr.Zero) ? ((NSError)Runtime.GetNSObject(intPtr2)) : null);
			Marshal.FreeHGlobal(intPtr);
			return nSObject;
		}
	}
}