ClassLibraryWeiBao/json引擎2/JsonPropertyAttribute.cs

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#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"/> to always serialize the member with the specified name.
  /// </summary>
  [AttributeUsage(AttributeTargets.Field | AttributeTargets.Property | AttributeTargets.Parameter, AllowMultiple = false)]
  public sealed class JsonPropertyAttribute : Attribute
  {
    // yuck. can't set nullable properties on an attribute in C#
    // have to use this approach to get an unset default state
    internal NullValueHandling? _nullValueHandling;
    internal DefaultValueHandling? _defaultValueHandling;
    internal ReferenceLoopHandling? _referenceLoopHandling;
    internal ObjectCreationHandling? _objectCreationHandling;
    internal TypeNameHandling? _typeNameHandling;
    internal bool? _isReference;
    internal int? _order;
    internal Required? _required;
    internal bool? _itemIsReference;
    internal ReferenceLoopHandling? _itemReferenceLoopHandling;
    internal TypeNameHandling? _itemTypeNameHandling;

    /// <summary>
    /// Gets or sets the converter used when serializing the property's collection items.
    /// </summary>
    /// <value>The collection's items converter.</value>
    public Type ItemConverterType { get; set; }

    /// <summary>
    /// Gets or sets the null value handling used when serializing this property.
    /// </summary>
    /// <value>The null value handling.</value>
    public NullValueHandling NullValueHandling