651 lines
24 KiB
C#
651 lines
24 KiB
C#
#region License
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// Copyright (c) 2007 James Newton-King
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//
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// Permission is hereby granted, free of charge, to any person
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// obtaining a copy of this software and associated documentation
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// files (the "Software"), to deal in the Software without
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// restriction, including without limitation the rights to use,
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// copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following
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// conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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// OTHER DEALINGS IN THE SOFTWARE.
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#endregion
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using System;
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using System.Collections.Generic;
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using System.Globalization;
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using System.IO;
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using System.Runtime.Serialization.Formatters;
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using Newtonsoft.Json.Converters;
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using Newtonsoft.Json.Serialization;
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using Newtonsoft.Json.Utilities;
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using System.Runtime.Serialization;
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using ErrorEventArgs=Newtonsoft.Json.Serialization.ErrorEventArgs;
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namespace Newtonsoft.Json
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{
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/// <summary>
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/// Serializes and deserializes objects into and from the JSON format.
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/// The <see cref="JsonSerializer"/> enables you to control how objects are encoded into JSON.
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/// </summary>
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public class JsonSerializer
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{
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#region Properties
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private TypeNameHandling _typeNameHandling;
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private FormatterAssemblyStyle _typeNameAssemblyFormat;
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private PreserveReferencesHandling _preserveReferencesHandling;
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private ReferenceLoopHandling _referenceLoopHandling;
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private MissingMemberHandling _missingMemberHandling;
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private ObjectCreationHandling _objectCreationHandling;
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private NullValueHandling _nullValueHandling;
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private DefaultValueHandling _defaultValueHandling;
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private ConstructorHandling _constructorHandling;
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private JsonConverterCollection _converters;
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private IContractResolver _contractResolver;
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private IReferenceResolver _referenceResolver;
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private SerializationBinder _binder;
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private StreamingContext _context;
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private Formatting? _formatting;
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private DateFormatHandling? _dateFormatHandling;
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private DateTimeZoneHandling? _dateTimeZoneHandling;
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private DateParseHandling? _dateParseHandling;
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private CultureInfo _culture;
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private int? _maxDepth;
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private bool _maxDepthSet;
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private bool? _checkAdditionalContent;
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/// <summary>
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/// Occurs when the <see cref="JsonSerializer"/> errors during serialization and deserialization.
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/// </summary>
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public virtual event EventHandler<ErrorEventArgs> Error;
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/// <summary>
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/// Gets or sets the <see cref="IReferenceResolver"/> used by the serializer when resolving references.
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/// </summary>
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public virtual IReferenceResolver ReferenceResolver
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{
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get
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{
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if (_referenceResolver == null)
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_referenceResolver = new DefaultReferenceResolver();
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return _referenceResolver;
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}
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set
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{
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if (value == null)
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throw new ArgumentNullException("value", "Reference resolver cannot be null.");
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_referenceResolver = value;
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}
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}
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/// <summary>
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/// Gets or sets the <see cref="SerializationBinder"/> used by the serializer when resolving type names.
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/// </summary>
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public virtual SerializationBinder Binder
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{
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get
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{
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return _binder;
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}
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set
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{
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if (value == null)
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throw new ArgumentNullException("value", "Serialization binder cannot be null.");
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_binder = value;
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}
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}
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/// <summary>
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/// Gets or sets how type name writing and reading is handled by the serializer.
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/// </summary>
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public virtual TypeNameHandling TypeNameHandling
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{
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get { return _typeNameHandling; }
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set
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{
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if (value < TypeNameHandling.None || value > TypeNameHandling.Auto)
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throw new ArgumentOutOfRangeException("value");
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_typeNameHandling = value;
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}
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}
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/// <summary>
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/// Gets or sets how a type name assembly is written and resolved by the serializer.
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/// </summary>
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/// <value>The type name assembly format.</value>
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public virtual FormatterAssemblyStyle TypeNameAssemblyFormat
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{
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get { return _typeNameAssemblyFormat; }
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set
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{
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if (value < FormatterAssemblyStyle.Simple || value > FormatterAssemblyStyle.Full)
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throw new ArgumentOutOfRangeException("value");
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_typeNameAssemblyFormat = value;
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}
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}
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/// <summary>
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/// Gets or sets how object references are preserved by the serializer.
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/// </summary>
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public virtual PreserveReferencesHandling PreserveReferencesHandling
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{
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get { return _preserveReferencesHandling; }
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set
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{
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if (value < PreserveReferencesHandling.None || value > PreserveReferencesHandling.All)
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throw new ArgumentOutOfRangeException("value");
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_preserveReferencesHandling = value;
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}
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}
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/// <summary>
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/// Get or set how reference loops (e.g. a class referencing itself) is handled.
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/// </summary>
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public virtual ReferenceLoopHandling ReferenceLoopHandling
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{
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get { return _referenceLoopHandling; }
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set
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{
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if (value < ReferenceLoopHandling.Error || value > ReferenceLoopHandling.Serialize)
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throw new ArgumentOutOfRangeException("value");
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_referenceLoopHandling = value;
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}
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}
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/// <summary>
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/// Get or set how missing members (e.g. JSON contains a property that isn't a member on the object) are handled during deserialization.
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/// </summary>
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public virtual MissingMemberHandling MissingMemberHandling
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{
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get { return _missingMemberHandling; }
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set
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{
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if (value < MissingMemberHandling.Ignore || value > MissingMemberHandling.Error)
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throw new ArgumentOutOfRangeException("value");
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_missingMemberHandling = value;
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}
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}
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/// <summary>
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/// Get or set how null values are handled during serialization and deserialization.
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/// </summary>
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public virtual NullValueHandling NullValueHandling
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{
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get { return _nullValueHandling; }
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set
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{
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if (value < NullValueHandling.Include || value > NullValueHandling.Ignore)
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throw new ArgumentOutOfRangeException("value");
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_nullValueHandling = value;
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}
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}
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/// <summary>
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/// Get or set how null default are handled during serialization and deserialization.
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/// </summary>
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public virtual DefaultValueHandling DefaultValueHandling
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{
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get { return _defaultValueHandling; }
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set
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{
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if (value < DefaultValueHandling.Include || value > DefaultValueHandling.IgnoreAndPopulate)
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throw new ArgumentOutOfRangeException("value");
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_defaultValueHandling = value;
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}
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}
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/// <summary>
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/// Gets or sets how objects are created during deserialization.
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/// </summary>
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/// <value>The object creation handling.</value>
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public virtual ObjectCreationHandling ObjectCreationHandling
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{
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get { return _objectCreationHandling; }
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set
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{
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if (value < ObjectCreationHandling.Auto || value > ObjectCreationHandling.Replace)
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throw new ArgumentOutOfRangeException("value");
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_objectCreationHandling = value;
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}
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}
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/// <summary>
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/// Gets or sets how constructors are used during deserialization.
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/// </summary>
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/// <value>The constructor handling.</value>
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public virtual ConstructorHandling ConstructorHandling
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{
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get { return _constructorHandling; }
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set
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{
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if (value < ConstructorHandling.Default || value > ConstructorHandling.AllowNonPublicDefaultConstructor)
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throw new ArgumentOutOfRangeException("value");
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_constructorHandling = value;
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}
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}
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/// <summary>
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/// Gets a collection <see cref="JsonConverter"/> that will be used during serialization.
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/// </summary>
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/// <value>Collection <see cref="JsonConverter"/> that will be used during serialization.</value>
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public virtual JsonConverterCollection Converters
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{
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get
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{
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if (_converters == null)
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_converters = new JsonConverterCollection();
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return _converters;
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}
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}
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/// <summary>
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/// Gets or sets the contract resolver used by the serializer when
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/// serializing .NET objects to JSON and vice versa.
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/// </summary>
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public virtual IContractResolver ContractResolver
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{
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get
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{
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if (_contractResolver == null)
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_contractResolver = DefaultContractResolver.Instance;
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return _contractResolver;
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}
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set { _contractResolver = value; }
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}
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/// <summary>
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/// Gets or sets the <see cref="StreamingContext"/> used by the serializer when invoking serialization callback methods.
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/// </summary>
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/// <value>The context.</value>
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public virtual StreamingContext Context
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{
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get { return _context; }
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set { _context = value; }
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}
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/// <summary>
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/// Indicates how JSON text output is formatted.
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/// </summary>
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public virtual Formatting Formatting
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{
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get { return _formatting ?? JsonSerializerSettings.DefaultFormatting; }
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set { _formatting = value; }
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}
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/// <summary>
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/// Get or set how dates are written to JSON text.
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/// </summary>
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public virtual DateFormatHandling DateFormatHandling
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{
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get { return _dateFormatHandling ?? JsonSerializerSettings.DefaultDateFormatHandling; }
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set { _dateFormatHandling = value; }
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}
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/// <summary>
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/// Get or set how <see cref="DateTime"/> time zones are handling during serialization and deserialization.
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/// </summary>
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public virtual DateTimeZoneHandling DateTimeZoneHandling
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{
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get { return _dateTimeZoneHandling ?? JsonSerializerSettings.DefaultDateTimeZoneHandling; }
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set { _dateTimeZoneHandling = value; }
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}
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/// <summary>
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/// Get or set how date formatted strings, e.g. "\/Date(1198908717056)\/" and "2012-03-21T05:40Z", are parsed when reading JSON.
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/// </summary>
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public virtual DateParseHandling DateParseHandling
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{
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get { return _dateParseHandling ?? JsonSerializerSettings.DefaultDateParseHandling; }
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set { _dateParseHandling = value; }
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}
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/// <summary>
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/// Gets or sets the culture used when reading JSON. Defaults to <see cref="CultureInfo.InvariantCulture"/>.
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/// </summary>
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public virtual CultureInfo Culture
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{
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get { return _culture ?? JsonSerializerSettings.DefaultCulture; }
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set { _culture = value; }
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}
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/// <summary>
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/// Gets or sets the maximum depth allowed when reading JSON. Reading past this depth will throw a <see cref="JsonReaderException"/>.
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/// </summary>
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public virtual int? MaxDepth
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{
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get { return _maxDepth; }
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set
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{
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if (value <= 0)
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throw new ArgumentException("Value must be positive.", "value");
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_maxDepth = value;
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_maxDepthSet = true;
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}
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}
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/// <summary>
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/// Gets a value indicating whether there will be a check for additional JSON content after deserializing an object.
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/// </summary>
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/// <value>
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/// <c>true</c> if there will be a check for additional JSON content after deserializing an object; otherwise, <c>false</c>.
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/// </value>
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public virtual bool CheckAdditionalContent
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{
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get { return _checkAdditionalContent ?? JsonSerializerSettings.DefaultCheckAdditionalContent; }
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set { _checkAdditionalContent = value; }
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}
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internal bool IsCheckAdditionalContentSet()
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{
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return (_checkAdditionalContent != null);
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}
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#endregion
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/// <summary>
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/// Initializes a new instance of the <see cref="JsonSerializer"/> class.
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/// </summary>
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public JsonSerializer()
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{
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_referenceLoopHandling = JsonSerializerSettings.DefaultReferenceLoopHandling;
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_missingMemberHandling = JsonSerializerSettings.DefaultMissingMemberHandling;
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_nullValueHandling = JsonSerializerSettings.DefaultNullValueHandling;
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_defaultValueHandling = JsonSerializerSettings.DefaultDefaultValueHandling;
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_objectCreationHandling = JsonSerializerSettings.DefaultObjectCreationHandling;
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_preserveReferencesHandling = JsonSerializerSettings.DefaultPreserveReferencesHandling;
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_constructorHandling = JsonSerializerSettings.DefaultConstructorHandling;
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_typeNameHandling = JsonSerializerSettings.DefaultTypeNameHandling;
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_context = JsonSerializerSettings.DefaultContext;
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_binder = DefaultSerializationBinder.Instance;
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}
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/// <summary>
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/// Creates a new <see cref="JsonSerializer"/> instance using the specified <see cref="JsonSerializerSettings"/>.
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/// </summary>
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/// <param name="settings">The settings to be applied to the <see cref="JsonSerializer"/>.</param>
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/// <returns>A new <see cref="JsonSerializer"/> instance using the specified <see cref="JsonSerializerSettings"/>.</returns>
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public static JsonSerializer Create(JsonSerializerSettings settings)
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{
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JsonSerializer jsonSerializer = new JsonSerializer();
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if (settings != null)
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{
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if (!CollectionUtils.IsNullOrEmpty(settings.Converters))
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jsonSerializer.Converters.AddRange(settings.Converters);
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// serializer specific
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jsonSerializer.TypeNameHandling = settings.TypeNameHandling;
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jsonSerializer.TypeNameAssemblyFormat = settings.TypeNameAssemblyFormat;
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jsonSerializer.PreserveReferencesHandling = settings.PreserveReferencesHandling;
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jsonSerializer.ReferenceLoopHandling = settings.ReferenceLoopHandling;
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jsonSerializer.MissingMemberHandling = settings.MissingMemberHandling;
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jsonSerializer.ObjectCreationHandling = settings.ObjectCreationHandling;
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jsonSerializer.NullValueHandling = settings.NullValueHandling;
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jsonSerializer.DefaultValueHandling = settings.DefaultValueHandling;
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jsonSerializer.ConstructorHandling = settings.ConstructorHandling;
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jsonSerializer.Context = settings.Context;
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jsonSerializer._checkAdditionalContent = settings._checkAdditionalContent;
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// reader/writer specific
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// unset values won't override reader/writer set values
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jsonSerializer._formatting = settings._formatting;
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jsonSerializer._dateFormatHandling = settings._dateFormatHandling;
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jsonSerializer._dateTimeZoneHandling = settings._dateTimeZoneHandling;
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jsonSerializer._dateParseHandling = settings._dateParseHandling;
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jsonSerializer._culture = settings._culture;
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jsonSerializer._maxDepth = settings._maxDepth;
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jsonSerializer._maxDepthSet = settings._maxDepthSet;
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if (settings.Error != null)
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jsonSerializer.Error += settings.Error;
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if (settings.ContractResolver != null)
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jsonSerializer.ContractResolver = settings.ContractResolver;
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if (settings.ReferenceResolver != null)
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jsonSerializer.ReferenceResolver = settings.ReferenceResolver;
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if (settings.Binder != null)
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jsonSerializer.Binder = settings.Binder;
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}
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return jsonSerializer;
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}
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/// <summary>
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/// Populates the JSON values onto the target object.
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/// </summary>
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/// <param name="reader">The <see cref="TextReader"/> that contains the JSON structure to reader values from.</param>
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/// <param name="target">The target object to populate values onto.</param>
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public void Populate(TextReader reader, object target)
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{
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Populate(new JsonTextReader(reader), target);
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}
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/// <summary>
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/// Populates the JSON values onto the target object.
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/// </summary>
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/// <param name="reader">The <see cref="JsonReader"/> that contains the JSON structure to reader values from.</param>
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/// <param name="target">The target object to populate values onto.</param>
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public void Populate(JsonReader reader, object target)
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{
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PopulateInternal(reader, target);
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}
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internal virtual void PopulateInternal(JsonReader reader, object target)
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{
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ValidationUtils.ArgumentNotNull(reader, "reader");
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ValidationUtils.ArgumentNotNull(target, "target");
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JsonSerializerInternalReader serializerReader = new JsonSerializerInternalReader(this);
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serializerReader.Populate(reader, target);
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}
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/// <summary>
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/// Deserializes the Json structure contained by the specified <see cref="JsonReader"/>.
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/// </summary>
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/// <param name="reader">The <see cref="JsonReader"/> that contains the JSON structure to deserialize.</param>
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/// <returns>The <see cref="Object"/> being deserialized.</returns>
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public object Deserialize(JsonReader reader)
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{
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return Deserialize(reader, null);
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}
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/// <summary>
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/// Deserializes the Json structure contained by the specified <see cref="StringReader"/>
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/// into an instance of the specified type.
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/// </summary>
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/// <param name="reader">The <see cref="TextReader"/> containing the object.</param>
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/// <param name="objectType">The <see cref="Type"/> of object being deserialized.</param>
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/// <returns>The instance of <paramref name="objectType"/> being deserialized.</returns>
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public object Deserialize(TextReader reader, Type objectType)
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{
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return Deserialize(new JsonTextReader(reader), objectType);
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}
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/// <summary>
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/// Deserializes the Json structure contained by the specified <see cref="JsonReader"/>
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/// into an instance of the specified type.
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/// </summary>
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/// <param name="reader">The <see cref="JsonReader"/> containing the object.</param>
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/// <typeparam name="T">The type of the object to deserialize.</typeparam>
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/// <returns>The instance of <typeparamref name="T"/> being deserialized.</returns>
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public T Deserialize<T>(JsonReader reader)
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{
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return (T)Deserialize(reader, typeof(T));
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}
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/// <summary>
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/// Deserializes the Json structure contained by the specified <see cref="JsonReader"/>
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/// into an instance of the specified type.
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/// </summary>
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/// <param name="reader">The <see cref="JsonReader"/> containing the object.</param>
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/// <param name="objectType">The <see cref="Type"/> of object being deserialized.</param>
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/// <returns>The instance of <paramref name="objectType"/> being deserialized.</returns>
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public object Deserialize(JsonReader reader, Type objectType)
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{
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return DeserializeInternal(reader, objectType);
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}
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internal virtual object DeserializeInternal(JsonReader reader, Type objectType)
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{
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ValidationUtils.ArgumentNotNull(reader, "reader");
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// set serialization options onto reader
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CultureInfo previousCulture = null;
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if (_culture != null && reader.Culture != _culture)
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{
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previousCulture = reader.Culture;
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reader.Culture = _culture;
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}
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DateTimeZoneHandling? previousDateTimeZoneHandling = null;
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if (_dateTimeZoneHandling != null && reader.DateTimeZoneHandling != _dateTimeZoneHandling)
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{
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previousDateTimeZoneHandling = reader.DateTimeZoneHandling;
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reader.DateTimeZoneHandling = _dateTimeZoneHandling.Value;
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}
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DateParseHandling? previousDateParseHandling = null;
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if (_dateParseHandling != null && reader.DateTimeZoneHandling != _dateTimeZoneHandling)
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{
|
|
previousDateParseHandling = reader.DateParseHandling;
|
|
reader.DateParseHandling = _dateParseHandling.Value;
|
|
}
|
|
int? previousMaxDepth = null;
|
|
if (_maxDepthSet && reader.MaxDepth != _maxDepth)
|
|
{
|
|
previousMaxDepth = reader.MaxDepth;
|
|
reader.MaxDepth = _maxDepth;
|
|
}
|
|
|
|
JsonSerializerInternalReader serializerReader = new JsonSerializerInternalReader(this);
|
|
object value = serializerReader.Deserialize(reader, objectType, CheckAdditionalContent);
|
|
|
|
// reset reader back to previous options
|
|
if (previousCulture != null)
|
|
reader.Culture = previousCulture;
|
|
if (previousDateTimeZoneHandling != null)
|
|
reader.DateTimeZoneHandling = previousDateTimeZoneHandling.Value;
|
|
if (previousDateParseHandling != null)
|
|
reader.DateParseHandling = previousDateParseHandling.Value;
|
|
if (_maxDepthSet)
|
|
reader.MaxDepth = previousMaxDepth;
|
|
|
|
return value;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Serializes the specified <see cref="Object"/> and writes the Json structure
|
|
/// to a <c>Stream</c> using the specified <see cref="TextWriter"/>.
|
|
/// </summary>
|
|
/// <param name="textWriter">The <see cref="TextWriter"/> used to write the Json structure.</param>
|
|
/// <param name="value">The <see cref="Object"/> to serialize.</param>
|
|
public void Serialize(TextWriter textWriter, object value)
|
|
{
|
|
Serialize(new JsonTextWriter(textWriter), value);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Serializes the specified <see cref="Object"/> and writes the Json structure
|
|
/// to a <c>Stream</c> using the specified <see cref="JsonWriter"/>.
|
|
/// </summary>
|
|
/// <param name="jsonWriter">The <see cref="JsonWriter"/> used to write the Json structure.</param>
|
|
/// <param name="value">The <see cref="Object"/> to serialize.</param>
|
|
public void Serialize(JsonWriter jsonWriter, object value)
|
|
{
|
|
SerializeInternal(jsonWriter, value);
|
|
}
|
|
|
|
internal virtual void SerializeInternal(JsonWriter jsonWriter, object value)
|
|
{
|
|
ValidationUtils.ArgumentNotNull(jsonWriter, "jsonWriter");
|
|
|
|
// set serialization options onto writer
|
|
Formatting? previousFormatting = null;
|
|
if (_formatting != null && jsonWriter.Formatting != _formatting)
|
|
{
|
|
previousFormatting = jsonWriter.Formatting;
|
|
jsonWriter.Formatting = _formatting.Value;
|
|
}
|
|
DateFormatHandling? previousDateFormatHandling = null;
|
|
if (_dateFormatHandling != null && jsonWriter.DateFormatHandling != _dateFormatHandling)
|
|
{
|
|
previousDateFormatHandling = jsonWriter.DateFormatHandling;
|
|
jsonWriter.DateFormatHandling = _dateFormatHandling.Value;
|
|
}
|
|
DateTimeZoneHandling? previousDateTimeZoneHandling = null;
|
|
if (_dateTimeZoneHandling != null && jsonWriter.DateTimeZoneHandling != _dateTimeZoneHandling)
|
|
{
|
|
previousDateTimeZoneHandling = jsonWriter.DateTimeZoneHandling;
|
|
jsonWriter.DateTimeZoneHandling = _dateTimeZoneHandling.Value;
|
|
}
|
|
|
|
JsonSerializerInternalWriter serializerWriter = new JsonSerializerInternalWriter(this);
|
|
serializerWriter.Serialize(jsonWriter, value);
|
|
|
|
// reset writer back to previous options
|
|
if (previousFormatting != null)
|
|
jsonWriter.Formatting = previousFormatting.Value;
|
|
if (previousDateFormatHandling != null)
|
|
jsonWriter.DateFormatHandling = previousDateFormatHandling.Value;
|
|
if (previousDateTimeZoneHandling != null)
|
|
jsonWriter.DateTimeZoneHandling = previousDateTimeZoneHandling.Value;
|
|
}
|
|
|
|
internal JsonConverter GetMatchingConverter(Type type)
|
|
{
|
|
return GetMatchingConverter(_converters, type);
|
|
}
|
|
|
|
internal static JsonConverter GetMatchingConverter(IList<JsonConverter> converters, Type objectType)
|
|
{
|
|
#if DEBUG
|
|
ValidationUtils.ArgumentNotNull(objectType, "objectType");
|
|
#endif
|
|
|
|
if (converters != null)
|
|
{
|
|
for (int i = 0; i < converters.Count; i++)
|
|
{
|
|
JsonConverter converter = converters[i];
|
|
|
|
if (converter.CanConvert(objectType))
|
|
return converter;
|
|
}
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
internal void OnError(ErrorEventArgs e)
|
|
{
|
|
EventHandler<ErrorEventArgs> error = Error;
|
|
if (error != null)
|
|
error(this, e);
|
|
}
|
|
}
|
|
} |