File: JsonFormatterConverter.cs

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

#if !(SILVERLIGHT || NETFX_CORE)
using System;
using System.Globalization;
using System.Runtime.Serialization;
using Newtonsoft.Json.Utilities;
using Newtonsoft.Json.Linq;

namespace Newtonsoft.Json.Serialization
{
  internal class JsonFormatterConverter : IFormatterConverter
  {
    private readonly JsonSerializer _serializer;

    public JsonFormatterConverter(JsonSerializer serializer)
    {
      ValidationUtils.ArgumentNotNull(serializer, "serializer");

      _serializer = serializer;
    }

    private T GetTokenValue<T>(object value)
    {
      ValidationUtils.ArgumentNotNull(value, "value");
      
      JValue v = (JValue)value;
      return (T)System.Convert.ChangeType(v.Value, typeof(T), CultureInfo.InvariantCulture);
    }

    public object Convert(object value, Type type)
    {
      ValidationUtils.ArgumentNotNull(value, "value");

      JToken token = value as JToken;
      if (token == null)
        throw new ArgumentException("Value is not a JToken.", "value");

      return _serializer.Deserialize(token.CreateReader(), type);
    }

    public object Convert(object value, TypeCode typeCode)
    {
      ValidationUtils.ArgumentNotNull(value, "value");

      if (value is JValue)
        value = ((JValue) value).Value;

      return System.Convert.ChangeType(value, typeCode, CultureInfo.InvariantCulture);
    }

    public bool ToBoolean(object value)
    {
      return GetTokenValue<bool>(value);
    }

    public byte ToByte(object value)
    {
      return GetTokenValue<byte>(value);
    }

    public char ToChar(object value)
    {
      return GetTokenValue<char>(value);
    }

    public DateTime ToDateTime(object value)
    {
      return GetTokenValue<DateTime>(value);
    }

    public decimal ToDecimal(object value)
    {
      return GetTokenValue<decimal>(value);
    }

    public double ToDouble(object value)
    {
      return GetTokenValue<double>(value);
    }

    public short ToInt16(object value)
    {
      return GetTokenValue<short>(value);
    }

    public int ToInt32(object value)
    {
      return GetTokenValue<int>(value);
    }

    public long ToInt64(object value)
    {
      return GetTokenValue<long>(value);
    }

    public sbyte ToSByte(object value)
    {
      return GetTokenValue<sbyte>(value);
    }

    public float ToSingle(object value)
    {
      return GetTokenValue<float>(value);
    }

    public string ToString(object value)
    {
      return GetTokenValue<string>(value);
    }

    public ushort ToUInt16(object value)
    {
      return GetTokenValue<ushort>(value);
    }

    public uint ToUInt32(object value)
    {
      return GetTokenValue<uint>(value);
    }

    public ulong ToUInt64(object value)
    {
      return GetTokenValue<ulong>(value);
    }
  }
}
#endif