apewer-dotnet/Apewer/Externals/Newtonsoft.Json-11.0.1/JsonObjectAttribute.cs

#region License
// Copyright (c) 2007 James Newton-King
//
// Permission is hereby granted, free of charge, to any person
// obtaining a copy of this software and associated documentation
// files (the "Software"), to deal in the Software without
// restriction, including without limitation the rights to use,
// copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following
// conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
#endregion

using System;

namespace Newtonsoft.Json
{
    /// <summary>
    /// Instructs the <see cref="JsonSerializer"/> how to serialize the object.
    /// </summary>
    [AttributeUsage(AttributeTargets.Class | AttributeTargets.Struct | AttributeTargets.Interface, AllowMultiple = false)]
    internal sealed class JsonObjectAttribute : JsonContainerAttribute
    {
        private MemberSerialization _memberSerialization = MemberSerialization.OptOut;
        
        // yuck. can't set nullable properties on an attribute in C#
        // have to use this approach to get an unset default state
        internal Required? _itemRequired;
        internal NullValueHandling? _itemNullValueHandling;

        /// <summary>
        /// Gets or sets the member serialization.
        /// </summary>
        /// <value>The member serialization.</value>
        public MemberSerialization MemberSerialization
        {
            get => _memberSerialization;
            set => _memberSerialization = value;
        }

        /// <summary>
        /// Gets or sets how the object's properties with null values are handled during serialization and deserialization.
        /// </summary>
        /// <value>How the object's properties with null values are handled during serialization and deserialization.</value>
        public NullValueHandling ItemNullValueHandling
        {
            get => _itemNullValueHandling ?? default(NullValueHandling);
            set => _itemNullValueHandling = value;
        }

        /// <summary>
        /// Gets or sets a value that indicates whether the object's properties are required.
        /// </summary>
        /// <value>
        /// 	A value indicating whether the object's properties are required.
        /// </value>
        public Required ItemRequired
        {
            get => _itemRequired ?? default(Required);
            set => _itemRequired = value;
        }

        /// <summary>
        /// Initializes a new instance of the <see cref="JsonObjectAttribute"/> class.
        /// </summary>
        public JsonObjectAttribute()
        {
        }

        /// <summary>
        /// Initializes a new instance of the <see cref="JsonObjectAttribute"/> class with the specified member serialization.
        /// </summary>
        /// <param name="memberSerialization">The member serialization.</param>
        public JsonObjectAttribute(MemberSerialization memberSerialization)
        {
            MemberSerialization = memberSerialization;
        }

        /// <summary>
        /// Initializes a new instance of the <see cref="JsonObjectAttribute"/> class with the specified container Id.
        /// </summary>
        /// <param name="id">The container Id.</param>
        public JsonObjectAttribute(string id)
            : base(id)
        {
        }
    }
}