1 #region License
2 // Copyright (c) 2007 James Newton-King
3 //
4 // Permission is hereby granted, free of charge, to any person
5 // obtaining a copy of this software and associated documentation
6 // files (the "Software"), to deal in the Software without
7 // restriction, including without limitation the rights to use,
8 // copy, modify, merge, publish, distribute, sublicense, and/or sell
9 // copies of the Software, and to permit persons to whom the
10 // Software is furnished to do so, subject to the following
11 // conditions:
12 //
13 // The above copyright notice and this permission notice shall be
14 // included in all copies or substantial portions of the Software.
15 //
16 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
17 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
18 // OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
19 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
20 // HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
21 // WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
22 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23 // OTHER DEALINGS IN THE SOFTWARE.
24 #endregion
25 
26 using System;
27 using System.Reflection;
28 using Newtonsoft.Json.Utilities;
29 using System.Globalization;
30 
31 namespace Newtonsoft.Json.Serialization
32 {
33     /// <summary>
34     /// Get and set values for a <see cref="MemberInfo"/> using reflection.
35     /// </summary>
36     public class ReflectionValueProvider : IValueProvider
37     {
38         private readonly MemberInfo _memberInfo;
39 
40         /// <summary>
41         /// Initializes a new instance of the <see cref="ReflectionValueProvider"/> class.
42         /// </summary>
43         /// <param name="memberInfo">The member info.</param>
ReflectionValueProvider(MemberInfo memberInfo)44         public ReflectionValueProvider(MemberInfo memberInfo)
45         {
46             ValidationUtils.ArgumentNotNull(memberInfo, nameof(memberInfo));
47             _memberInfo = memberInfo;
48         }
49 
50         /// <summary>
51         /// Sets the value.
52         /// </summary>
53         /// <param name="target">The target to set the value on.</param>
54         /// <param name="value">The value to set on the target.</param>
SetValue(object target, object value)55         public void SetValue(object target, object value)
56         {
57             try
58             {
59                 ReflectionUtils.SetMemberValue(_memberInfo, target, value);
60             }
61             catch (Exception ex)
62             {
63                 throw new JsonSerializationException("Error setting value to '{0}' on '{1}'.".FormatWith(CultureInfo.InvariantCulture, _memberInfo.Name, target.GetType()), ex);
64             }
65         }
66 
67         /// <summary>
68         /// Gets the value.
69         /// </summary>
70         /// <param name="target">The target to get the value from.</param>
71         /// <returns>The value.</returns>
GetValue(object target)72         public object GetValue(object target)
73         {
74             try
75             {
76                 return ReflectionUtils.GetMemberValue(_memberInfo, target);
77             }
78             catch (Exception ex)
79             {
80                 throw new JsonSerializationException("Error getting value from '{0}' on '{1}'.".FormatWith(CultureInfo.InvariantCulture, _memberInfo.Name, target.GetType()), ex);
81             }
82         }
83     }
84 }