1173 lines
38 KiB
C#
1173 lines
38 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.IO;
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using System.Globalization;
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#if !(NET20 || NET35 || PORTABLE40 || PORTABLE)
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using System.Numerics;
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#endif
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using Newtonsoft.Json.Serialization;
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using Newtonsoft.Json.Utilities;
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#if NET20
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using Newtonsoft.Json.Utilities.LinqBridge;
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#else
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using System.Linq;
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#endif
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namespace Newtonsoft.Json
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{
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/// <summary>
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/// Represents a reader that provides fast, non-cached, forward-only access to serialized JSON data.
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/// </summary>
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public abstract class JsonReader : IDisposable
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{
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/// <summary>
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/// Specifies the state of the reader.
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/// </summary>
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protected internal enum State
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{
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/// <summary>
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/// The Read method has not been called.
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/// </summary>
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Start,
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/// <summary>
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/// The end of the file has been reached successfully.
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/// </summary>
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Complete,
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/// <summary>
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/// Reader is at a property.
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/// </summary>
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Property,
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/// <summary>
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/// Reader is at the start of an object.
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/// </summary>
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ObjectStart,
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/// <summary>
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/// Reader is in an object.
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/// </summary>
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Object,
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/// <summary>
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/// Reader is at the start of an array.
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/// </summary>
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ArrayStart,
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/// <summary>
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/// Reader is in an array.
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/// </summary>
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Array,
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/// <summary>
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/// The Close method has been called.
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/// </summary>
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Closed,
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/// <summary>
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/// Reader has just read a value.
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/// </summary>
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PostValue,
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/// <summary>
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/// Reader is at the start of a constructor.
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/// </summary>
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ConstructorStart,
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/// <summary>
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/// Reader in a constructor.
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/// </summary>
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Constructor,
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/// <summary>
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/// An error occurred that prevents the read operation from continuing.
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/// </summary>
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Error,
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/// <summary>
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/// The end of the file has been reached successfully.
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/// </summary>
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Finished
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}
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// current Token data
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private JsonToken _tokenType;
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private object _value;
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internal char _quoteChar;
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internal State _currentState;
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private JsonPosition _currentPosition;
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private CultureInfo _culture;
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private DateTimeZoneHandling _dateTimeZoneHandling;
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private int? _maxDepth;
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private bool _hasExceededMaxDepth;
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internal DateParseHandling _dateParseHandling;
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internal FloatParseHandling _floatParseHandling;
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private string _dateFormatString;
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private List<JsonPosition> _stack;
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/// <summary>
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/// Gets the current reader state.
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/// </summary>
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/// <value>The current reader state.</value>
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protected State CurrentState
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{
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get { return _currentState; }
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}
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/// <summary>
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/// Gets or sets a value indicating whether the underlying stream or
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/// <see cref="TextReader"/> should be closed when the reader is closed.
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/// </summary>
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/// <value>
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/// true to close the underlying stream or <see cref="TextReader"/> when
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/// the reader is closed; otherwise false. The default is true.
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/// </value>
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public bool CloseInput { get; set; }
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/// <summary>
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/// Gets or sets a value indicating whether multiple pieces of JSON content can
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/// be read from a continuous stream without erroring.
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/// </summary>
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/// <value>
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/// true to support reading multiple pieces of JSON content; otherwise false. The default is false.
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/// </value>
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public bool SupportMultipleContent { get; set; }
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/// <summary>
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/// Gets the quotation mark character used to enclose the value of a string.
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/// </summary>
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public virtual char QuoteChar
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{
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get { return _quoteChar; }
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protected internal set { _quoteChar = 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 when reading JSON.
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/// </summary>
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public DateTimeZoneHandling DateTimeZoneHandling
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{
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get { return _dateTimeZoneHandling; }
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set
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{
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if (value < DateTimeZoneHandling.Local || value > DateTimeZoneHandling.RoundtripKind)
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{
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throw new ArgumentOutOfRangeException(nameof(value));
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}
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_dateTimeZoneHandling = value;
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}
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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 DateParseHandling DateParseHandling
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{
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get { return _dateParseHandling; }
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set
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{
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if (value < DateParseHandling.None ||
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#if !NET20
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value > DateParseHandling.DateTimeOffset
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#else
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value > DateParseHandling.DateTime
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#endif
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)
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{
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throw new ArgumentOutOfRangeException(nameof(value));
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}
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_dateParseHandling = value;
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}
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}
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/// <summary>
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/// Get or set how floating point numbers, e.g. 1.0 and 9.9, are parsed when reading JSON text.
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/// </summary>
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public FloatParseHandling FloatParseHandling
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{
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get { return _floatParseHandling; }
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set
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{
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if (value < FloatParseHandling.Double || value > FloatParseHandling.Decimal)
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{
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throw new ArgumentOutOfRangeException(nameof(value));
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}
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_floatParseHandling = value;
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}
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}
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/// <summary>
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/// Get or set how custom date formatted strings are parsed when reading JSON.
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/// </summary>
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public string DateFormatString
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{
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get { return _dateFormatString; }
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set { _dateFormatString = 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 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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{
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throw new ArgumentException("Value must be positive.", nameof(value));
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}
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_maxDepth = value;
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}
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}
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/// <summary>
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/// Gets the type of the current JSON token.
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/// </summary>
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public virtual JsonToken TokenType
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{
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get { return _tokenType; }
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}
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/// <summary>
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/// Gets the text value of the current JSON token.
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/// </summary>
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public virtual object Value
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{
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get { return _value; }
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}
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/// <summary>
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/// Gets The Common Language Runtime (CLR) type for the current JSON token.
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/// </summary>
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public virtual Type ValueType
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{
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get { return (_value != null) ? _value.GetType() : null; }
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}
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/// <summary>
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/// Gets the depth of the current token in the JSON document.
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/// </summary>
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/// <value>The depth of the current token in the JSON document.</value>
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public virtual int Depth
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{
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get
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{
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int depth = (_stack != null) ? _stack.Count : 0;
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if (JsonTokenUtils.IsStartToken(TokenType) || _currentPosition.Type == JsonContainerType.None)
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{
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return depth;
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}
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else
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{
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return depth + 1;
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}
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}
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}
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/// <summary>
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/// Gets the path of the current JSON token.
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/// </summary>
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public virtual string Path
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{
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get
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{
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if (_currentPosition.Type == JsonContainerType.None)
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{
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return string.Empty;
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}
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bool insideContainer = (_currentState != State.ArrayStart
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&& _currentState != State.ConstructorStart
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&& _currentState != State.ObjectStart);
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JsonPosition? current = insideContainer ? (JsonPosition?)_currentPosition : null;
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return JsonPosition.BuildPath(_stack, current);
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}
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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 CultureInfo Culture
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{
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get { return _culture ?? CultureInfo.InvariantCulture; }
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set { _culture = value; }
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}
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internal JsonPosition GetPosition(int depth)
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{
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if (_stack != null && depth < _stack.Count)
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{
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return _stack[depth];
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}
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return _currentPosition;
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="JsonReader"/> class with the specified <see cref="TextReader"/>.
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/// </summary>
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protected JsonReader()
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{
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_currentState = State.Start;
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_dateTimeZoneHandling = DateTimeZoneHandling.RoundtripKind;
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_dateParseHandling = DateParseHandling.DateTime;
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_floatParseHandling = FloatParseHandling.Double;
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CloseInput = true;
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}
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private void Push(JsonContainerType value)
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{
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UpdateScopeWithFinishedValue();
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if (_currentPosition.Type == JsonContainerType.None)
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{
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_currentPosition = new JsonPosition(value);
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}
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else
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{
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if (_stack == null)
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{
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_stack = new List<JsonPosition>();
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}
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_stack.Add(_currentPosition);
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_currentPosition = new JsonPosition(value);
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// this is a little hacky because Depth increases when first property/value is written but only testing here is faster/simpler
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if (_maxDepth != null && Depth + 1 > _maxDepth && !_hasExceededMaxDepth)
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{
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_hasExceededMaxDepth = true;
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throw JsonReaderException.Create(this, "The reader's MaxDepth of {0} has been exceeded.".FormatWith(CultureInfo.InvariantCulture, _maxDepth));
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}
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}
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}
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private JsonContainerType Pop()
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{
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JsonPosition oldPosition;
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if (_stack != null && _stack.Count > 0)
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{
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oldPosition = _currentPosition;
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_currentPosition = _stack[_stack.Count - 1];
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_stack.RemoveAt(_stack.Count - 1);
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}
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else
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{
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oldPosition = _currentPosition;
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_currentPosition = new JsonPosition();
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}
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if (_maxDepth != null && Depth <= _maxDepth)
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{
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_hasExceededMaxDepth = false;
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}
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return oldPosition.Type;
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}
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private JsonContainerType Peek()
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{
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return _currentPosition.Type;
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}
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/// <summary>
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/// Reads the next JSON token from the stream.
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/// </summary>
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/// <returns>true if the next token was read successfully; false if there are no more tokens to read.</returns>
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public abstract bool Read();
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/// <summary>
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/// Reads the next JSON token from the stream as a <see cref="Nullable{Int32}"/>.
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/// </summary>
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/// <returns>A <see cref="Nullable{Int32}"/>. This method will return <c>null</c> at the end of an array.</returns>
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public virtual int? ReadAsInt32()
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{
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JsonToken t = GetContentToken();
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switch (t)
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{
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case JsonToken.None:
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case JsonToken.Null:
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case JsonToken.EndArray:
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return null;
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case JsonToken.Integer:
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case JsonToken.Float:
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if (!(Value is int))
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{
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SetToken(JsonToken.Integer, Convert.ToInt32(Value, CultureInfo.InvariantCulture), false);
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}
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return (int)Value;
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case JsonToken.String:
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string s = (string)Value;
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return ReadInt32String(s);
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}
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throw JsonReaderException.Create(this, "Error reading integer. Unexpected token: {0}.".FormatWith(CultureInfo.InvariantCulture, t));
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}
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internal int? ReadInt32String(string s)
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{
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if (string.IsNullOrEmpty(s))
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{
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SetToken(JsonToken.Null, null, false);
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return null;
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}
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int i;
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if (int.TryParse(s, NumberStyles.Integer, Culture, out i))
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{
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SetToken(JsonToken.Integer, i, false);
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return i;
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}
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else
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{
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SetToken(JsonToken.String, s, false);
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throw JsonReaderException.Create(this, "Could not convert string to integer: {0}.".FormatWith(CultureInfo.InvariantCulture, s));
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}
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}
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/// <summary>
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/// Reads the next JSON token from the stream as a <see cref="String"/>.
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/// </summary>
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/// <returns>A <see cref="String"/>. This method will return <c>null</c> at the end of an array.</returns>
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public virtual string ReadAsString()
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{
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JsonToken t = GetContentToken();
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switch (t)
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{
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case JsonToken.None:
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case JsonToken.Null:
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case JsonToken.EndArray:
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return null;
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case JsonToken.String:
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return (string)Value;
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}
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if (JsonTokenUtils.IsPrimitiveToken(t))
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{
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if (Value != null)
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{
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string s;
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if (Value is IFormattable)
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{
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s = ((IFormattable)Value).ToString(null, Culture);
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}
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else if (Value is Uri)
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{
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s = ((Uri)Value).OriginalString;
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}
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else
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{
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s = Value.ToString();
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}
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SetToken(JsonToken.String, s, false);
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return s;
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}
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}
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throw JsonReaderException.Create(this, "Error reading string. Unexpected token: {0}.".FormatWith(CultureInfo.InvariantCulture, t));
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}
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/// <summary>
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/// Reads the next JSON token from the stream as a <see cref="Byte"/>[].
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/// </summary>
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/// <returns>A <see cref="Byte"/>[] or a null reference if the next JSON token is null. This method will return <c>null</c> at the end of an array.</returns>
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public virtual byte[] ReadAsBytes()
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{
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JsonToken t = GetContentToken();
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if (t == JsonToken.None)
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{
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return null;
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}
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|
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if (TokenType == JsonToken.StartObject)
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{
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ReadIntoWrappedTypeObject();
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byte[] data = ReadAsBytes();
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ReaderReadAndAssert();
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if (TokenType != JsonToken.EndObject)
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{
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throw JsonReaderException.Create(this, "Error reading bytes. Unexpected token: {0}.".FormatWith(CultureInfo.InvariantCulture, TokenType));
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}
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SetToken(JsonToken.Bytes, data, false);
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return data;
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}
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|
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switch (t)
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{
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case JsonToken.String:
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{
|
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// attempt to convert possible base 64 or GUID string to bytes
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// GUID has to have format 00000000-0000-0000-0000-000000000000
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string s = (string)Value;
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byte[] data;
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|
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Guid g;
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if (s.Length == 0)
|
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{
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data = new byte[0];
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}
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else if (ConvertUtils.TryConvertGuid(s, out g))
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{
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data = g.ToByteArray();
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}
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else
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{
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data = Convert.FromBase64String(s);
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}
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SetToken(JsonToken.Bytes, data, false);
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return data;
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}
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case JsonToken.Null:
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case JsonToken.EndArray:
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return null;
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case JsonToken.Bytes:
|
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if (ValueType == typeof(Guid))
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{
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byte[] data = ((Guid)Value).ToByteArray();
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SetToken(JsonToken.Bytes, data, false);
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return data;
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}
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return (byte[])Value;
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case JsonToken.StartArray:
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return ReadArrayIntoByteArray();
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}
|
|
|
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throw JsonReaderException.Create(this, "Error reading bytes. Unexpected token: {0}.".FormatWith(CultureInfo.InvariantCulture, t));
|
|
}
|
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|
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internal byte[] ReadArrayIntoByteArray()
|
|
{
|
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List<byte> buffer = new List<byte>();
|
|
|
|
while (true)
|
|
{
|
|
JsonToken t = GetContentToken();
|
|
switch (t)
|
|
{
|
|
case JsonToken.None:
|
|
throw JsonReaderException.Create(this, "Unexpected end when reading bytes.");
|
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case JsonToken.Integer:
|
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buffer.Add(Convert.ToByte(Value, CultureInfo.InvariantCulture));
|
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break;
|
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case JsonToken.EndArray:
|
|
byte[] d = buffer.ToArray();
|
|
SetToken(JsonToken.Bytes, d, false);
|
|
return d;
|
|
default:
|
|
throw JsonReaderException.Create(this, "Unexpected token when reading bytes: {0}.".FormatWith(CultureInfo.InvariantCulture, t));
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Reads the next JSON token from the stream as a <see cref="Nullable{Decimal}"/>.
|
|
/// </summary>
|
|
/// <returns>A <see cref="Nullable{Decimal}"/>. This method will return <c>null</c> at the end of an array.</returns>
|
|
public virtual double? ReadAsDouble()
|
|
{
|
|
JsonToken t = GetContentToken();
|
|
|
|
switch (t)
|
|
{
|
|
case JsonToken.None:
|
|
case JsonToken.Null:
|
|
case JsonToken.EndArray:
|
|
return null;
|
|
case JsonToken.Integer:
|
|
case JsonToken.Float:
|
|
if (!(Value is double))
|
|
{
|
|
SetToken(JsonToken.Float, Convert.ToDouble(Value, CultureInfo.InvariantCulture), false);
|
|
}
|
|
|
|
return (double) Value;
|
|
case JsonToken.String:
|
|
return ReadDoubleString((string) Value);
|
|
}
|
|
|
|
throw JsonReaderException.Create(this, "Error reading double. Unexpected token: {0}.".FormatWith(CultureInfo.InvariantCulture, t));
|
|
}
|
|
|
|
internal double? ReadDoubleString(string s)
|
|
{
|
|
if (string.IsNullOrEmpty(s))
|
|
{
|
|
SetToken(JsonToken.Null, null, false);
|
|
return null;
|
|
}
|
|
|
|
double d;
|
|
if (double.TryParse(s, NumberStyles.Float | NumberStyles.AllowThousands, Culture, out d))
|
|
{
|
|
SetToken(JsonToken.Float, d, false);
|
|
return d;
|
|
}
|
|
else
|
|
{
|
|
SetToken(JsonToken.String, s, false);
|
|
throw JsonReaderException.Create(this, "Could not convert string to double: {0}.".FormatWith(CultureInfo.InvariantCulture, s));
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Reads the next JSON token from the stream as a <see cref="Nullable{Boolean}"/>.
|
|
/// </summary>
|
|
/// <returns>A <see cref="Nullable{Boolean}"/>. This method will return <c>null</c> at the end of an array.</returns>
|
|
public virtual bool? ReadAsBoolean()
|
|
{
|
|
JsonToken t = GetContentToken();
|
|
|
|
switch (t)
|
|
{
|
|
case JsonToken.None:
|
|
case JsonToken.Null:
|
|
case JsonToken.EndArray:
|
|
return null;
|
|
case JsonToken.Integer:
|
|
case JsonToken.Float:
|
|
bool b;
|
|
#if !(NET20 || NET35 || PORTABLE40 || PORTABLE)
|
|
if (Value is BigInteger)
|
|
{
|
|
b = (BigInteger)Value != 0;
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
b = Convert.ToBoolean(Value, CultureInfo.InvariantCulture);
|
|
}
|
|
|
|
SetToken(JsonToken.Boolean, b, false);
|
|
|
|
return b;
|
|
case JsonToken.String:
|
|
return ReadBooleanString((string)Value);
|
|
case JsonToken.Boolean:
|
|
return (bool)Value;
|
|
}
|
|
|
|
throw JsonReaderException.Create(this, "Error reading boolean. Unexpected token: {0}.".FormatWith(CultureInfo.InvariantCulture, t));
|
|
}
|
|
|
|
internal bool? ReadBooleanString(string s)
|
|
{
|
|
if (string.IsNullOrEmpty(s))
|
|
{
|
|
SetToken(JsonToken.Null, null, false);
|
|
return null;
|
|
}
|
|
|
|
bool b;
|
|
if (bool.TryParse(s, out b))
|
|
{
|
|
SetToken(JsonToken.Boolean, b, false);
|
|
return b;
|
|
}
|
|
else
|
|
{
|
|
SetToken(JsonToken.String, s, false);
|
|
throw JsonReaderException.Create(this, "Could not convert string to boolean: {0}.".FormatWith(CultureInfo.InvariantCulture, s));
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Reads the next JSON token from the stream as a <see cref="Nullable{Decimal}"/>.
|
|
/// </summary>
|
|
/// <returns>A <see cref="Nullable{Decimal}"/>. This method will return <c>null</c> at the end of an array.</returns>
|
|
public virtual decimal? ReadAsDecimal()
|
|
{
|
|
JsonToken t = GetContentToken();
|
|
|
|
switch (t)
|
|
{
|
|
case JsonToken.None:
|
|
case JsonToken.Null:
|
|
case JsonToken.EndArray:
|
|
return null;
|
|
case JsonToken.Integer:
|
|
case JsonToken.Float:
|
|
if (!(Value is decimal))
|
|
{
|
|
SetToken(JsonToken.Float, Convert.ToDecimal(Value, CultureInfo.InvariantCulture), false);
|
|
}
|
|
|
|
return (decimal)Value;
|
|
case JsonToken.String:
|
|
return ReadDecimalString((string)Value);
|
|
}
|
|
|
|
throw JsonReaderException.Create(this, "Error reading decimal. Unexpected token: {0}.".FormatWith(CultureInfo.InvariantCulture, t));
|
|
}
|
|
|
|
internal decimal? ReadDecimalString(string s)
|
|
{
|
|
if (string.IsNullOrEmpty(s))
|
|
{
|
|
SetToken(JsonToken.Null, null, false);
|
|
return null;
|
|
}
|
|
|
|
decimal d;
|
|
if (decimal.TryParse(s, NumberStyles.Number, Culture, out d))
|
|
{
|
|
SetToken(JsonToken.Float, d, false);
|
|
return d;
|
|
}
|
|
else
|
|
{
|
|
SetToken(JsonToken.String, s, false);
|
|
throw JsonReaderException.Create(this, "Could not convert string to decimal: {0}.".FormatWith(CultureInfo.InvariantCulture, s));
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Reads the next JSON token from the stream as a <see cref="Nullable{DateTime}"/>.
|
|
/// </summary>
|
|
/// <returns>A <see cref="Nullable{DateTime}"/>. This method will return <c>null</c> at the end of an array.</returns>
|
|
public virtual DateTime? ReadAsDateTime()
|
|
{
|
|
switch (GetContentToken())
|
|
{
|
|
case JsonToken.None:
|
|
case JsonToken.Null:
|
|
case JsonToken.EndArray:
|
|
return null;
|
|
case JsonToken.Date:
|
|
#if !NET20
|
|
if (Value is DateTimeOffset)
|
|
{
|
|
SetToken(JsonToken.Date, ((DateTimeOffset)Value).DateTime, false);
|
|
}
|
|
#endif
|
|
|
|
return (DateTime)Value;
|
|
case JsonToken.String:
|
|
string s = (string)Value;
|
|
return ReadDateTimeString(s);
|
|
}
|
|
|
|
throw JsonReaderException.Create(this, "Error reading date. Unexpected token: {0}.".FormatWith(CultureInfo.InvariantCulture, TokenType));
|
|
}
|
|
|
|
internal DateTime? ReadDateTimeString(string s)
|
|
{
|
|
if (string.IsNullOrEmpty(s))
|
|
{
|
|
SetToken(JsonToken.Null, null, false);
|
|
return null;
|
|
}
|
|
|
|
DateTime dt;
|
|
if (DateTimeUtils.TryParseDateTime(s, DateTimeZoneHandling, _dateFormatString, Culture, out dt))
|
|
{
|
|
dt = DateTimeUtils.EnsureDateTime(dt, DateTimeZoneHandling);
|
|
SetToken(JsonToken.Date, dt, false);
|
|
return dt;
|
|
}
|
|
|
|
if (DateTime.TryParse(s, Culture, DateTimeStyles.RoundtripKind, out dt))
|
|
{
|
|
dt = DateTimeUtils.EnsureDateTime(dt, DateTimeZoneHandling);
|
|
SetToken(JsonToken.Date, dt, false);
|
|
return dt;
|
|
}
|
|
|
|
throw JsonReaderException.Create(this, "Could not convert string to DateTime: {0}.".FormatWith(CultureInfo.InvariantCulture, s));
|
|
}
|
|
|
|
#if !NET20
|
|
/// <summary>
|
|
/// Reads the next JSON token from the stream as a <see cref="Nullable{DateTimeOffset}"/>.
|
|
/// </summary>
|
|
/// <returns>A <see cref="Nullable{DateTimeOffset}"/>. This method will return <c>null</c> at the end of an array.</returns>
|
|
public virtual DateTimeOffset? ReadAsDateTimeOffset()
|
|
{
|
|
JsonToken t = GetContentToken();
|
|
|
|
switch (t)
|
|
{
|
|
case JsonToken.None:
|
|
case JsonToken.Null:
|
|
case JsonToken.EndArray:
|
|
return null;
|
|
case JsonToken.Date:
|
|
if (Value is DateTime)
|
|
{
|
|
SetToken(JsonToken.Date, new DateTimeOffset((DateTime)Value), false);
|
|
}
|
|
|
|
return (DateTimeOffset)Value;
|
|
case JsonToken.String:
|
|
string s = (string)Value;
|
|
return ReadDateTimeOffsetString(s);
|
|
default:
|
|
throw JsonReaderException.Create(this, "Error reading date. Unexpected token: {0}.".FormatWith(CultureInfo.InvariantCulture, t));
|
|
}
|
|
}
|
|
|
|
internal DateTimeOffset? ReadDateTimeOffsetString(string s)
|
|
{
|
|
if (string.IsNullOrEmpty(s))
|
|
{
|
|
SetToken(JsonToken.Null, null, false);
|
|
return null;
|
|
}
|
|
|
|
DateTimeOffset dt;
|
|
if (DateTimeUtils.TryParseDateTimeOffset(s, _dateFormatString, Culture, out dt))
|
|
{
|
|
SetToken(JsonToken.Date, dt, false);
|
|
return dt;
|
|
}
|
|
|
|
if (DateTimeOffset.TryParse(s, Culture, DateTimeStyles.RoundtripKind, out dt))
|
|
{
|
|
SetToken(JsonToken.Date, dt, false);
|
|
return dt;
|
|
}
|
|
|
|
SetToken(JsonToken.String, s, false);
|
|
throw JsonReaderException.Create(this, "Could not convert string to DateTimeOffset: {0}.".FormatWith(CultureInfo.InvariantCulture, s));
|
|
}
|
|
#endif
|
|
|
|
internal void ReaderReadAndAssert()
|
|
{
|
|
if (!Read())
|
|
{
|
|
throw CreateUnexpectedEndException();
|
|
}
|
|
}
|
|
|
|
internal JsonReaderException CreateUnexpectedEndException()
|
|
{
|
|
return JsonReaderException.Create(this, "Unexpected end when reading JSON.");
|
|
}
|
|
|
|
internal void ReadIntoWrappedTypeObject()
|
|
{
|
|
ReaderReadAndAssert();
|
|
if (Value.ToString() == JsonTypeReflector.TypePropertyName)
|
|
{
|
|
ReaderReadAndAssert();
|
|
if (Value != null && Value.ToString().StartsWith("System.Byte[]", StringComparison.Ordinal))
|
|
{
|
|
ReaderReadAndAssert();
|
|
if (Value.ToString() == JsonTypeReflector.ValuePropertyName)
|
|
{
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
throw JsonReaderException.Create(this, "Error reading bytes. Unexpected token: {0}.".FormatWith(CultureInfo.InvariantCulture, JsonToken.StartObject));
|
|
}
|
|
|
|
/// <summary>
|
|
/// Skips the children of the current token.
|
|
/// </summary>
|
|
public void Skip()
|
|
{
|
|
if (TokenType == JsonToken.PropertyName)
|
|
{
|
|
Read();
|
|
}
|
|
|
|
if (JsonTokenUtils.IsStartToken(TokenType))
|
|
{
|
|
int depth = Depth;
|
|
|
|
while (Read() && (depth < Depth))
|
|
{
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sets the current token.
|
|
/// </summary>
|
|
/// <param name="newToken">The new token.</param>
|
|
protected void SetToken(JsonToken newToken)
|
|
{
|
|
SetToken(newToken, null, true);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sets the current token and value.
|
|
/// </summary>
|
|
/// <param name="newToken">The new token.</param>
|
|
/// <param name="value">The value.</param>
|
|
protected void SetToken(JsonToken newToken, object value)
|
|
{
|
|
SetToken(newToken, value, true);
|
|
}
|
|
|
|
internal void SetToken(JsonToken newToken, object value, bool updateIndex)
|
|
{
|
|
_tokenType = newToken;
|
|
_value = value;
|
|
|
|
switch (newToken)
|
|
{
|
|
case JsonToken.StartObject:
|
|
_currentState = State.ObjectStart;
|
|
Push(JsonContainerType.Object);
|
|
break;
|
|
case JsonToken.StartArray:
|
|
_currentState = State.ArrayStart;
|
|
Push(JsonContainerType.Array);
|
|
break;
|
|
case JsonToken.StartConstructor:
|
|
_currentState = State.ConstructorStart;
|
|
Push(JsonContainerType.Constructor);
|
|
break;
|
|
case JsonToken.EndObject:
|
|
ValidateEnd(JsonToken.EndObject);
|
|
break;
|
|
case JsonToken.EndArray:
|
|
ValidateEnd(JsonToken.EndArray);
|
|
break;
|
|
case JsonToken.EndConstructor:
|
|
ValidateEnd(JsonToken.EndConstructor);
|
|
break;
|
|
case JsonToken.PropertyName:
|
|
_currentState = State.Property;
|
|
|
|
_currentPosition.PropertyName = (string)value;
|
|
break;
|
|
case JsonToken.Undefined:
|
|
case JsonToken.Integer:
|
|
case JsonToken.Float:
|
|
case JsonToken.Boolean:
|
|
case JsonToken.Null:
|
|
case JsonToken.Date:
|
|
case JsonToken.String:
|
|
case JsonToken.Raw:
|
|
case JsonToken.Bytes:
|
|
SetPostValueState(updateIndex);
|
|
break;
|
|
}
|
|
}
|
|
|
|
internal void SetPostValueState(bool updateIndex)
|
|
{
|
|
if (Peek() != JsonContainerType.None)
|
|
{
|
|
_currentState = State.PostValue;
|
|
}
|
|
else
|
|
{
|
|
SetFinished();
|
|
}
|
|
|
|
if (updateIndex)
|
|
{
|
|
UpdateScopeWithFinishedValue();
|
|
}
|
|
}
|
|
|
|
private void UpdateScopeWithFinishedValue()
|
|
{
|
|
if (_currentPosition.HasIndex)
|
|
{
|
|
_currentPosition.Position++;
|
|
}
|
|
}
|
|
|
|
private void ValidateEnd(JsonToken endToken)
|
|
{
|
|
JsonContainerType currentObject = Pop();
|
|
|
|
if (GetTypeForCloseToken(endToken) != currentObject)
|
|
{
|
|
throw JsonReaderException.Create(this, "JsonToken {0} is not valid for closing JsonType {1}.".FormatWith(CultureInfo.InvariantCulture, endToken, currentObject));
|
|
}
|
|
|
|
if (Peek() != JsonContainerType.None)
|
|
{
|
|
_currentState = State.PostValue;
|
|
}
|
|
else
|
|
{
|
|
SetFinished();
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sets the state based on current token type.
|
|
/// </summary>
|
|
protected void SetStateBasedOnCurrent()
|
|
{
|
|
JsonContainerType currentObject = Peek();
|
|
|
|
switch (currentObject)
|
|
{
|
|
case JsonContainerType.Object:
|
|
_currentState = State.Object;
|
|
break;
|
|
case JsonContainerType.Array:
|
|
_currentState = State.Array;
|
|
break;
|
|
case JsonContainerType.Constructor:
|
|
_currentState = State.Constructor;
|
|
break;
|
|
case JsonContainerType.None:
|
|
SetFinished();
|
|
break;
|
|
default:
|
|
throw JsonReaderException.Create(this, "While setting the reader state back to current object an unexpected JsonType was encountered: {0}".FormatWith(CultureInfo.InvariantCulture, currentObject));
|
|
}
|
|
}
|
|
|
|
private void SetFinished()
|
|
{
|
|
if (SupportMultipleContent)
|
|
{
|
|
_currentState = State.Start;
|
|
}
|
|
else
|
|
{
|
|
_currentState = State.Finished;
|
|
}
|
|
}
|
|
|
|
private JsonContainerType GetTypeForCloseToken(JsonToken token)
|
|
{
|
|
switch (token)
|
|
{
|
|
case JsonToken.EndObject:
|
|
return JsonContainerType.Object;
|
|
case JsonToken.EndArray:
|
|
return JsonContainerType.Array;
|
|
case JsonToken.EndConstructor:
|
|
return JsonContainerType.Constructor;
|
|
default:
|
|
throw JsonReaderException.Create(this, "Not a valid close JsonToken: {0}".FormatWith(CultureInfo.InvariantCulture, token));
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
|
|
/// </summary>
|
|
void IDisposable.Dispose()
|
|
{
|
|
Dispose(true);
|
|
GC.SuppressFinalize(this);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Releases unmanaged and - optionally - managed resources
|
|
/// </summary>
|
|
/// <param name="disposing"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
|
|
protected virtual void Dispose(bool disposing)
|
|
{
|
|
if (_currentState != State.Closed && disposing)
|
|
{
|
|
Close();
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Changes the <see cref="State"/> to Closed.
|
|
/// </summary>
|
|
public virtual void Close()
|
|
{
|
|
_currentState = State.Closed;
|
|
_tokenType = JsonToken.None;
|
|
_value = null;
|
|
}
|
|
|
|
internal void ReadAndAssert()
|
|
{
|
|
if (!Read())
|
|
{
|
|
throw JsonSerializationException.Create(this, "Unexpected end when reading JSON.");
|
|
}
|
|
}
|
|
|
|
internal bool ReadAndMoveToContent()
|
|
{
|
|
return Read() && MoveToContent();
|
|
}
|
|
|
|
internal bool MoveToContent()
|
|
{
|
|
JsonToken t = TokenType;
|
|
while (t == JsonToken.None || t == JsonToken.Comment)
|
|
{
|
|
if (!Read())
|
|
{
|
|
return false;
|
|
}
|
|
|
|
t = TokenType;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
private JsonToken GetContentToken()
|
|
{
|
|
JsonToken t;
|
|
do
|
|
{
|
|
if (!Read())
|
|
{
|
|
SetToken(JsonToken.None);
|
|
return JsonToken.None;
|
|
}
|
|
else
|
|
{
|
|
t = TokenType;
|
|
}
|
|
} while (t == JsonToken.Comment);
|
|
|
|
return t;
|
|
}
|
|
}
|
|
} |