System_VersionMessagePackSerializer.cs

#region -- License Terms --
//
// MessagePack for CLI
//
// Copyright (C) 2010-2012 FUJIWARA, Yusuke
//
//    Licensed under the Apache License, Version 2.0 (the "License");
//    you may not use this file except in compliance with the License.
//    You may obtain a copy of the License at
//
//        http://www.apache.org/licenses/LICENSE-2.0
//
//    Unless required by applicable law or agreed to in writing, software
//    distributed under the License is distributed on an "AS IS" BASIS,
//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//    See the License for the specific language governing permissions and
//    limitations under the License.
//
#endregion -- License Terms --

using System;
using System.Diagnostics.Contracts;

namespace MsgPack.Serialization.DefaultSerializers
{
	internal sealed class System_VersionMessagePackSerializer : MessagePackSerializer<Version>
	{
		public System_VersionMessagePackSerializer( PackerCompatibilityOptions packerCompatibilityOptions )
			: base( packerCompatibilityOptions ) { }

		protected internal sealed override void PackToCore( Packer packer, Version objectTree )
		{
			packer.PackArrayHeader( 4 );
			packer.Pack( objectTree.Major );
			packer.Pack( objectTree.Minor );
			packer.Pack( objectTree.Build );
			packer.Pack( objectTree.Revision );
		}

		protected internal sealed override Version UnpackFromCore( Unpacker unpacker )
		{
			long length = unpacker.LastReadData.AsInt64();
			int[] array = new int[ 4 ];
			for ( int i = 0; i < length && i < 4; i++ )
			{
				if ( !unpacker.Read() )
				{
					throw SerializationExceptions.NewMissingItem( i );
				}

				array[ i ] = unpacker.LastReadData.AsInt32();
			}

			return new Version( array[ 0 ], array[ 1 ], array[ 2 ], array[ 3 ] );
		}
	}
}